One more website: Ubu.

Here is a good website if you want to watch independent and avant-garde films in streaming. Enjoy !

http://www.ubu.com/film/

There are three films by Lipsett, some films by Dziga Vertov, which Deleuze talks a lot in his book, and many more.

I also think it could be interesting to give film's examples from this website since everybody could have access to them.