Though it's hardly unknown, I just watched Foxy Brown for the first time last night, and was in love with every minute of it.
And I just ordered these two box sets from DeepDiscount.com (they're having a Buy 1 Get 1 Free sale on select Anchor Bay titles):
$30.38 total for thirteen films. :) Can't beat that. Still haven't even seen any of Mario Bava's films, but I hear he's fantastic and highly influential. (My favorite horror director, Dario Argento, was his apprentice; and my favorite movie of his, Suspiria, was apparently done as an homage to Bava and his style.)
Plus, Bava made the film that the greatest metal band on earth culled its name from, MOTHERLOVIN' BLACK SABBATH, DAWG.