See the complete EW 2005 Must List
Here are the 122 people and things we love this year (including ''O.C.'' up-and-comer Rachel Bilson)

RACHEL BILSON

Age 23

Mustworthiness: Effervescent Bilson — who's turned haughty hottie Summer Roberts into a lovable demoiselle capable of both high drama and screwball comedy — shone brightest in an otherwise dim second season of The O.C. And how friggin' cute is she as superhero alter ego Little Miss Vixen?

On Her Must List: ''Bruce Springsteen's in town. I dropped the ball and didn't get tickets. Now they're telling me it's going to cost $3,000. Can you believe that?''

Actually, We Can. You Gonna Pay Up?: ''No! I don't have that money! Are you kidding?!''

Heroine Chic: ''Oh, gawwwd. [O.C. creator] Josh Schwartz likes to dress me up. It's uncomfortable being in that Little Miss Vixen outfit for 17 hours, but it's fun as long as you can make fun of yourself. That's key.''

Open-Door Policy: ''We have a joke on set: Summer doesn't have a house. She just lives in a room, and everybody is free to walk in. It's the only way to explain how Seth keeps barging in.''

Next: Filming The Last Kiss, a remake of the 2001 Italian dramedy, with Casey Affleck, Blythe Danner, and Zach Braff as a potential suitor. The O.C. returns to Fox in September.