Free Online FPS?

[Crafty]

Looking for something to spice up my free time..

List your favorite free online FPS's.

[BipolarPanda]

[url]http://www.quakelive.com[/url]

[Pat4ever]

[URL="http://store.steampowered.com/app/13140/"]America's Army.[/URL]

[DeVotchKa]

There's a couple. I'll post links later, 'bout to go a god damn family gathering.
Operation 7
Crossfire
Combat Arms
Wolf Team
Blackshot

[Crafty]

Thanks for the suggestions, I plan on trying some out over the next couple of days.