This seems to be the watch Tv Online day, it´s crazy how all those sites pop up at the same day. Peekvid.com offers more than 700 episodes of well know tv series like 24, Buffy, Desperate Housewives, Family Guy aso for free. You can view them online or even download them to your pc. I´am not sure if this site will be online much longer but enjoy it will it´s there.
The quality of the episodes is real good, you don´t have a option for viewing it in full screen though but I was able to resize the window.
source:ghacks.net