Oh ya, I forgot to mention that.
If you pick up the "Orange Box" package it comes with Team Fortress 2, Half-Life 2, Half-Life 2: Episode 1 and 2, and Portal.

Only 50 bucks for the PC version or 60 bucks for xbox 360 or ps3 versions. Pretty awesome deal if you ask me, it was one of the few times I didn't feel like I was getting gutted when I bought a video game.
worm Reviewed by worm on . Portal. Probably the most amazing game I've ever played while high. Definitely recommend it to anyone. Its a puzzle-based first person shooter with an awesome story. There are no lives, there is no ammo, there is no health bar, there is no game over. You will often find yourself getting carried away just jumping through portals. The story line, along with the computer system who kind of narrates it, is hilarious and keeps the game incredibly entertaining the whole way through. The ending is SO Rating: 5