The inauguration of our 44th President, Barack Obama, brought out all of the biggest names in Hollywood. Jessica Alba, Jennifer Lopez, Anne Hathaway, Ashton Kutcher and more came out to celebrate our country's new leader both at the daytime ceremony and the evening festivities around Washington, D.C. on January 20. Check out photos of your favorite supportive celebrities in this Moviefone gallery.

Before there was Punk'd, Nikon ads and Demi Moore, Ashton Kutcher was hamming it up in 'Dude, Where's My Car' with 'Role Models' Seann William Scott. After partying it up one night, the two stoner friends wake up and find out that they've misplaced their car. They spend the day retracing their steps and trying to figure out just what happened the night before...and it isn't pretty.

Whether you've never seen this cult comedy or have worn out your DVD copy, now you can watch the entire movie online thanks to Hulu and AOL TV.

Cameron Diaz is reportedly seeking "medical attention" for stress due to the unexpected death of her father, Emilio. According to Starpulse, 'What Happens in Vegas' co-star Ashton Kutcher told a photographer of Cameron's state when asked about her absence from the movie's premiere in London on Monday night.

"Sadly, she will not be joining us for the premiere as she has just lost her father and is under medical attention with stress at the moment," Ashton said. "But she will be better soon."