Michael Dorn is Bhaal in SoA. There's no mistaking that voice.
(The same voice actor who voices the ToB NPC voices Bhaal in ToB. I'm having a serious brain fart at the moment and can't remember his name.)
Makes me laugh about all the "actors for a BG2 movie?" threads. The voice actors in this game are the best of the best, IMO. Only an animated movie would do this game justice.