I would have to say "The Company" starring Neve Campbell is the worst I've seen.
Boring, NO plot, not much talking, the dancing wasn't that great, I didn't care about any characters, nothing happened... there was no point for even making this movie.
I would say that it was was more boring than if they had followed some real people from a dance company around with video cameras.
Warning: Don't watch it! You'll kick yourself for wasting the time and killing so many brain cells!
So, what's the Worst movie you've ever seen? The one you LEAST recommend?