Hi!
do you know that such websites are illegal? moreover, since this website is trying to respect the rules of copyright, i don �t feel really confortable answering your post... but i can tell that I sometimes use emule to look for videos (tv series, video clips...), it �s a free software you can easily find...
however be careful when using illegal videos in your classes... for example, when i don �t know a film and someone recommended it (it was the case for the movie Twilight), I download it, and if i like it, or want to use it with my pupils, i buy it, so no one can tell i used illegal videos...
have a nice day/evening...
Elodie