ET's own Mary Hart had a stellar lineup of star interviews in 2009, but she admits that one really stood out.

"It was my time spent with Paul McCartney, Ringo Starr, Olivia Harrison and Yoko Ono," she says. "I was thrilled."

This year marked the 45th anniversary of The Beatles' first appearance on the "The Ed Sullivan Show," which is available on "The Beatles: The First U.S. Visit" documentary DVD. All these years later, Mary has a very special memory.

"I've always said that Paul McCartney was the first interview I ever did at the age of 13 over in Sweden because I talked my way backstage and met him," she recalls.

When asked by Paul if he was polite and pleasant during their interview, Mary says, "You were actually amazing, polite and pleasant."

This year also saw Mary in Rome for a sit down with 'Angels & Demons' star Tom Hanks.

"We sat up on top of the Castel Sant'Angelo overlooking the Vatican in the background and it was a magical setting," she says.

Another Tom -- Tom Cruise -- along with Cameron Diaz met up with Mary in Boston. And then Mary met herself at Madame Tussaud's Wax Museum, where she had been replicated, joining a star-studded cast of wax figures.

"It was kind of a jaw-dropping moment when I'm suddenly looking at myself in wax," she says. "It was surreal."

Another highlight of the year was Mary's interview with Jon Gosselin and his onetime girlfriend Hailey Glassman.

For more of Mary Hart's best interviews of 2009, tune in to tonight's ET!