One of the outstanding ones was Toblo, which was awarded Best Student Game at 2007 IGF. This was a simple game where player(s) threw blocks at each other, with the aim of capturing your opponents flags. Simple but sweet.
Incidently, the team lead, Steve Chiavelli, was the only one I managed to take a photo with before the IGF event on Wednesday (7 Mar, 2007).
Steve (all round nice guy), proposed to his sweetheart that night during the awards ceremony, and naturally, she accepted.
Go to the IGF website for videos of the night's proceedings. Look for the Best Student Game award video. Viewing the video just for the proposal is cool enough. :)
Go to digipen's site to download and play Toblo.
I enjoyed it. You just might.