There are heaps of misnamed files being shared. Check a file with Bitzi before download... if other users have rated the file then you'll get some idea of content & quality. If you can preview the movie during download, you'll see what you're getting. If the file's been misnamed, kill the download & search again.
How to use Bitzi

And some more tips in the thread below.
How to find music(tips for movies, too)