I tried many wesites to watch tv shows and ended up very frustrated, then I found http://faststreamtv.com/?show=Lost to watch different tv shows just change the name of the show you want to watch. ...
Sidereel.com will track shows for you and has a lot of links for most of there shows where you can watch episodes for free
yes that website i know is Hulu
CBS.com has full episodes of NCIS.
Hulu has a lot of stuff.