Lots of F2P (free2Play) games available. I really enjoyed Runes of Magic. It's really the only F2P (has an item mall) game I actually enjoyed. It depends on what style of game you enjoy.
I am a rabid mmorpg fan and that's what Runes of Magic is. Graphics are pretty good and there is tons to do.
BTW: Don't play on an PvP servers. My main was on a pvp server and there just really wasn't that much activity, only ganking.
Also you might want to look into DDO (Dungeon&Dragons Online), though the graphics really are outdated and turned me off.
LOTRO is another pretty good f2p w/ item mall.
Hope those suggestions help. Sucks being cooped up and off your feet for days.
Is anyone playing Quickhit NFL Football?
It is a free strategy/simulation football game. Free to play. Like most of these games, you can pay money to develop your team faster, or you can play free and develop slowly. A full game takes about 10-12 minutes to play, and every time you play you earn points to use towards building your team's capabilities (through training). Good time waster.