The only ps3 game I've ever stuck with for a long period of time online is Resistance:Fall of Man.
No other FPS comes close imo. I can't stick with games like MW2 and BFBC2 (even though I loved it)
I'll give Uncharted a go soon, see what all the fuss is about.
“There are three things all wise men fear: the sea in storm, a night with no moon, and the anger of a gentle man.”