Next Tuesday's public memorial service for Michael Jackson will be an event of "extraordinary" scope that could present unique challenges for the city of L.A, officials said on Friday. Read on to find out how to get tickets to the memorial or watch it on TV!

Speaking at a press conference, L.A. City Councilwoman Jan Perry called the public memorial -- which takes place next Tuesday at 10 a.m. at the Staples Center -- a special event "with the potential to impact public safety." She urged fans to consider watching the service on TV, via a world-wide video feed being made available to the networks.

Tim Leiweke, the president and CEO of sports/entertainment corporation AEG, said 17,500 free tickets are being released to the legions of fans expected in town. Eleven thousand tickets are for the service at L.A.'s Staples Center, while 6,500 more are for seats at the nearby Nokia Theater, where the event is being simulcast.

A new development has reportedly emerged in the Michael Jackson death investigation.

A law enforcement source tells the Associated Press that Diprivan was discovered in Jackson's home.

Diane Dimond, who has been covering Jackson since 1993, tells ET that Diprivan is a sedative that "puts you to sleep for surgeries." Click here for video of Dimond's full explanation about the possible effects of the drug.

Madonna will pay special tribute to Michael Jackson when she resumes her Sticky & Sweet tour in London tomorrow night.

Madonna's rep tells the Associated Press that she'll perform a special song and dance number in memory of Michael during the concert.

In exclusive photos of a dress rehearsal for the show (posted on Madonna's Web site), a man dressed like the late King of Pop is pictured busting dance moves while the Material Mom and an entourage watch on, looking impressed.

Sarah Palin is resigning as Alaska governor.

The former Republican VP candidate says she'll step down from office on July 26, reports the Associated Press.

Palin's spokesperson didn’t specify why she is resigning, but the AP says the move has created buzz that she might attempt to run for president in 2012.

What kind of music was the King of Pop dreaming up before he died? Read on for the dish.

The late star was at work on a pop album and classical, instrumental pieces, says Billboard.com. On the pop album, he was collaborating with songwriter Claude Kelly and R&B star Akon, who says Michael was inspired by popular demand for tickets to his shows.

"He said, 'My fans are still there. They still love me. They're alive,'" Akon says. "His kids are like his first priority, and they had never seen him perform live. He was trying to create the most incredible show for his kids."

'Spider-Man' star Tobey Maguire has lifted the web of mystery surrounding his newborn son's name.

Tobey and wife Jennifer Meyer named their second child Otis Tobias Maguire, says People.com.

Otis was born in May, joining big sister Ruby, 2.

A rep for the late Michael Jackson's personal physician, Dr. Conrad Murray, says the doctor would prefer to grieve in private.

"He will be mourning in private because he feels his presence would remind people of Michael Jackson's death, and the doctor would prefer that people remember his friend as he was in life," Murray's spokesperson says.

As for when Murray might comment on the medical attention he gave Jackson, the doctor is "completely off the radar until the toxicology results are revealed," his rep says, adding, "He's not even talking to friends and family, and I haven't even spoken to him personally, either."

"HIMYM" star Cobie Smulders and her fiancé Taran Killam have welcomed their first bundle of joy!

The couple became parents to a baby girl, Shaelyn Cado Killam, on May 16, says People.com.

In March, Cobie's "HIMYM" co-star Alyson Hannigan also welcomed a daughter.

Over 1,000 immigrants pledged their allegiance to the United States at a citizenship ceremony at Walt Disney World on Friday, and a celebrity gave the keynote address!

After taking their oath, the massive group of new American citizens were treated to the premiere of Disney's refurbished Hall of Presidents attraction, which is slated to reopen to the public on Saturday.

Andy Garcia, a naturalized citizen born in Cuba, delivered the keynote address at the ceremony, which was co-hosted by Disney Parks and Resorts and United States Citizenship and Immigration Services.

Michael Jackson was busy putting on the final touches for his 50-date London concerts at the O2 Arena when he unexpectedly died. Now, ET's Thea Andrews is with the men behind the massive production to reveal what could have been Michael's most incredible concert tour yet!

A show filled with music, dance, stunts and pyrotechnics, Michael's "This is It" concert was being directed by Kenny Ortega, the man who designed Michael's "Dangerous" tour, choreographed 'Dirty Dancing' and also brought "High School Musical" to the world. Kenny says that Michael promised "the concert of a lifetime" and was prepared to deliver.

"We [had] some fun things planned," he says, referring to gigantic spiders, 20-foot puppets, a flaming bed, a pole dancing aerialist, a 3D movie and plenty more magic. "It's complex in scale and it's as big as anything I've ever done or attempted to do for an arena production."

As we head into the Fourth of July, ET asked the stars to give a shout out for the red, white and blue, telling us why they are proud to be an American. Here is what they had to say.

'Transformers' star Josh Duhamel tells ET he is proud to be an American for numerous reasons, but he is concerned with the economy right now, so he urges us to buy American, saying, "As Americans right now, it's important we buy American automobiles, clothing, and whatever, because we need to get the economy on track."

Suzanne Somers declares: "To live free is such a privilege when you see how so many others are living. So, yes, to be born in the country is a privilege and God bless America."

Tobey Maguire, Jake Gyllenhaal and Natalie Portman create a potent love triangle in the powerful drama 'Brothers,' in theaters this December, and we have a first look at the preview trailer!

'Brothers' stars Tobey and Jake as siblings Sam and Tommy, two polar opposites: Sam is a steadfast marine and family man about to embark on his fourth tour of duty. Tommy is a drifter just out of jail who gets by on his charm and wit.

When Sam's chopper is shot down in the mountains of Afghanistan and he's believed to be dead, Tommy turns over a new leaf by taking responsibility for Sam's wife, Grace (Portman), and children -- leading to an unexpected attraction. Later, Sam returns home after being captured and tortured by Taliban fighters, shifting the family dynamic into super uncomfortable territory…

California Attorney General Jerry Brown has joined the police investigation into Michael Jackson's death. Read on to find out why.

Brown says his office will assist police in determining whether prescription drugs had anything to do with Michael Jackson's death, says the Associated Press. Brown says key information could be provided by a records search of the state database that keeps track of doctors who’ve written drug prescriptions, the amount of the drugs prescribed, and the patients who’ve received them.

On Wednesday night, a federal law-enforcement source told ET that the Drug Enforcement Administration (DEA) had also joined the investigation.

The concert promoter behind Michael Jackson's canceled 50-date concert series says its multi-million dollar losses might be covered by insurance, depending on Jackson's cause of death.

Randy Phillips, the chief executive of AEG Live, the concert promoter, tells the Associated Press that insurance will help pay for the losses on Jackson’s canceled residence at London’s O2 arena if the King of Pop’s death is ruled accidental -- even if by drug overdose – not if, however, Jackson passed away due to natural causes.

Phillips says AEG Live acquired $17.5 million in insurance coverage via Lloyd’s of London. But the company spent $25 million to $30 million in advance money for production costs and to Jackson and his staff, covering expenses that included Jackson’s debts and the rent on his L.A. mansion.

An attorney for Debbie Rowe is speaking out about whether Rowe will pursue custody of her two children with Michael Jackson.

Echoing what ET reported from its sources earlier this morning, Rowe's attorney tells the Associated Press that she is still deciding whether to seek custody of her children with Jackson, son Michael "Prince" and daughter Paris-Michael.

The late star's youngest son, Prince "Blanket," was delivered via surrogate.

The time, date and ticket-availability info for Michael Jackson's public memorial have been announced.

The farewell service for Jackson will take place on Tuesday, July 7 at 10 a.m. at the Staples Center. Eleven thousand tickets will be made available to the general public free of charge.

The program will also be simulcast at Los Angeles' nearby Nokia Theatre.

ET can confirm that the hearing to determine custody of Michael Jackson's children has been delayed.

The hearing that had originally been set for Monday, July 6, has been rescheduled to Monday, July 13 at 8:30 a.m.

Jackson's ex-wife Debbie Rowe gave birth to Jackson's two older children, Michael "Prince" and Paris-Michael , while his youngest son, Prince "Blanket," was delivered via surrogate.

ET has just obtained the footage from one of Michael Jackson's final rehearsals, shot just two days before his death on June 23.

The one minute and forty two second video shows the late singer wearing black pants, red shirt, gray blazer and red lipstick while performing his song "They Don't Really Care About Us" live.

He appears strong and when he finishes the song he is all smiles.

Investigative journalist Diane Dimond, who has covered the King of Pop since 1993, talks to ET about the new details in the Michael Jackson investigation and Jermaine Jackson's farewell interview.

The public will be able to pay its respects to Michael at Staples Center in Los Angeles on Tuesday at 10 a.m. This is where Michael spent some of his last hours, on stage rehearsing for his London comeback.

But before MJ is laid to rest, reports of his life continue. In today's New York Post, Linda Stasi wrote a scathing column about Michael.