SLI configuration --- which games???

I'm thinking about going SLI, but I'm wondering which games take advantage of SLI?

I'm currently playing these games:

FEAR
Rise & Fall: Civilizations at War
Call of Duty II

Anybody knows if the 3 games above benefit from SLI?

Please list any games you know will benefit from SLI...

Thank you.

pretty much any of the newer FPS games will give you awesome results, add to your list doom 3 and quake 4 and those sorta games