Well, i've only seen some of his films, but apart from BBTS (probably his best) i was also impressed by Unfinished Piece for Player Piano (beautifully filmed), Dark Eyes (lyrical, whimsical and wistfully romantic version of Chekhov's Lady with a Little Dog), and to a lesser extent Urga (European film of the Year, set on the Mongolian steppes). I've not seen Slave of Love, which i understand is excellent.