You can indeed...in fact, im just playing it online in the irvine building now! And i know you know who I am, young gringo! I'm on
www.holdempoker.com which has a good set of rooms to play in, either for money or just for fun.
www.pacificpoker.com is another good site, as well as
www.partypoker.com. holdempoker.com is really quick and easy to sign up to though, id use that one myself.