Unreal Tournament 3 for the PS3 turns out to be a really entertaining game.
Taken from the review:
In this game the man with the fastest thumbs is king. It's a blast to kill and getting killed isn't too much of a hassle because you can respawn instantly. If you own a PS 3 and complain about the supposed lack of online games then you owe it to yourself to pick up the game. There's also support for mouse and keyboard and since that would be awkward because I play games in my bed, but if you can do it then do it. If you can't then make sure you filter that out of your server preferences. So go out, buy this game and own.