Emma Watson is confirmed to play Sam in the upcoming film, The Perks of Being a WallFlower. The author of the book, by the same name, confirmed Emma would be in flick.
Logan Lerman, from Percy Jackson and the Olympians: The Lightning Thief, has already been confirmed for the movie. Filming will apparently begin in early 2011 in Pittsburgh.
I think Emma and Logan will be awesome on-screen together, I can’t wait to see them.