Metatron, Dogma
Lest we forget how funny he was, it's important to note his character Metatron, the voice of God, in Kevin Smith's Dogma. In fact, the director shared these words today via Facebook:
Thank you for lending a hack like me your artistry and your credibility, Alan. You were never Snape to me as much as you were the adult Harry Potter himself: a bonafide wizard who could conjure absolute magic using merely words. He was a HUGE cauldron of win, this man. I'll miss him forever. Rest in Peace, Voice of God. Back to Heaven, where you came from...