All of Valve's Familiar Faces In One Battlefield

Can you point out every Valve game that makes an appearance here? Counter-Strike, Half-Life, Portal, Left 4 Dead, Team Fortress 2... the list goes on.

[Video spoiler] I just wish Gordon hadn't killed Chell, especially considering how half-assed the animation on that kill was. Plus, they seem like they'd be such good friends.

Valve World [YouTube via Reddit]