Recently DICE (the company that brought you Battlefield 1942) created a game called Battlefield Heroes. It's a pretty good game. It's also free. Check it out.

http://www.battlefieldheroes.com/

I don't know why, but I sort of love the cartoon graphics.

haha not sure about "recently" but this game has horrible problems with matching low levels with high levels

I agree, but if you're even remotely good at the game you don't notice it.