The first book in the Gemma Doyle trilogy is being made into a movie, as you may know. It's coming out in 2010. The author, Libba Bray, has some movie news in her blog:
"NOTHING HAS BEEN CAST. NOTHING. DO NOT BELIEVE WHAT YOU READ ON THE INTRAMANETS." She wrote this on October 10, so I think that even though IMDB has people listed in the three main female roles, we should ignore that.
However, that doesn't mean we can't speculate!!!
Who would make the best Gemma? The best Anne? Felicity? Kartik?
Get the books and audiobooks here -- they're some of my favorites.