Copyright Criminals is an hour-long doc about sampling and the art thereof. Here it is in its entirety:

Some points: one) Gilbert O’Sullivan didn’t sue Biz Markie, the company to which he assigned his copyright did, two) the film should have been CC licensed — it’s something of an artfail that it’s not, three) the bit where Saul Williams talks about sampling in trip hop has been continually blowing my mind — Bjork becomes even more of a weird Icelandic half-elf, four) sampling is clearly art and making it illegal is clearly wrong-headed, if not outright racist.