Question: Please tell me this; it's been driving me nuts! In Rachel Bilson's bio it says she had a tiny cameo on Buffy the Vampire Slayer. I'm a huge Buffy addict and I love The O.C.. Could you tell me which episode she guest-starred in? — Barbie, Summit, N.J.

Televisionary: That I can. She played Colleen in the April 2003 episode "Dirty Girls."