Quick Hit: Portal (PC)

Portal is awesome. It's laugh out loud funny, uniquely puzzling, and one of the best games I've played this year (also by far the shortest). It's certainly not worth 50 bucks as part of The Orange Box or 20 by itself, but it's definitely worth the price I paid for it (which is nothing). If you know someone who has The Orange Box or aren't afraid of breaking the law, give Portal a spin. You won't be disappointed.