13 from House M.D.
I surprised me when I saw Sarah aka Olivia Wilde in this movie.
As was I. I wanted her to diagnose something :-P
She looks better with her natural color hair though.
She's a natural blonde, she just dyes it darker. And I agree that she looks better as a brunette.
Movies I've seen in 2010: http://www.flixster.com/movie-list/2010-movies-6