Fear and Loathing is a must see, if you haven't seen it!!

But looking at your list...
"House of 1000 corpses"
"Devil's Rejects" (follow up to 1000 corpses)
Both awsome films imo...directed by Rob Zombie

You could try "Waking Life"
which is completly different, but worth a watch.

Edit: "Bad Taste" is such a good film...directed by Peter Jackson I think

also if you want to find out about a film check out www.imdb.com, it has pretty much every film ever...check it out.