Where can i get videos of movies and tv shows?

well like i got an iPod. and i was on the train and i was like wow i should get some videos on here so i wont be so bored(i was goin g to manhatten) so i wana know where i can get it except iTunes. like id like it to be free, but i cant and dont wana use limewire or those type of program. anyone know anywhere else like off the internet? well if not then anywhere thats payable but at a resonable price... thanks a lot!