Maple Story's not bad--Preatty rough grinding after level 40 though--I could help you out if you get on Broa, too. ;D Cant beat free games.
WoW's a little over-rated. o_o; It's good, but It's really not worth the money...I know..I've wasted that money. :'(
Runescape? Eww...*Twitch*