If you have an iPod Video and you don’t want to spend time converting your movies to work on the ipod then just download them in the iPod format via torrents. You could try search sites such as torrentspy and thepiratebay for ipod videos but an easier way would be to go to Podtropolis, a 100% pure iPod Video tracker. Its a bit quiet there now since its still new but it should start getting more popular soon. [Link]
Update: Here is more ipodvideotorrents.com and videoipodder.com