Television stars from CBS, Showtime, and the CW gathered on Monday night to celebrate at the Television Critics' Association Summer Press Tour Party, and ET was there to catch up with all your favorite small screen stars!

"The Mentalist" star Simon Baker tells ET about the challenge of keeping the audience entertained and interested in the story lines with each new season.

"The challenge is maintaining," the hunky actor tells ET. "You're going to do 22 - 23 episodes a year; it's hard to keep the consistency from the script all the way to the final cut. That's the most difficult thing because fatigue sets in. You want to embrace repetition that is wanted by the audience, but at the same time you don't want to overrun the same concept on the show all the time. Trying to keep it fresh, and similar at the same time, that's a challenge."

"The Beautiful Life" star Elle Macpherson tells ET about the new CW drama created by actor Ashton Kutcher.

"We just shot the pilot," she says. "You're going to have to tune into the CW network to see what's going on but it's really exciting it's great to be back in front of the camera."

The gorgeous star also gives ET an update on her co-star Mischa Barton.

"She's been amazing, I worked with her in March and she was fabulous," she says. "I'll be seeing her next week hopefully. As far as I know she's doing well."

Other celebs at the party included "Nurse Jackie" star Edie Falco, "How I Met Your Mother"'s Josh Radnor, "CSI Miami"'s Emily Procter, and "90210" stars Tristan Wilds and Shenae Grimes.

ET also caught up with Jennie Garth and her husband, 'Twilight' star Peter Facinelli, who dished on the upcoming 'Twilight' sequels 'New Moon,' and 'Eclipse' -- watch the video for more with the stars!