Continuity mistake: When Paulie and Jimmy go to visit Henry at his girlfriend Janice's apartment to talk to him, after Paulie sits down and begins the conversation with Henry, both a Star of David pendant and a crucifix pendant can be seen hanging from the necklace around Henry's neck. At first the Star of David is hanging over the crucifix, then it has switched to the crucifix hanging over the Star of David. (01:16:15)
Factual error: If you look at the band playing in the Regal Club the night the boy's mother first visits, the night where they first bring on the donkey, you'll notice that the drum kit used by the drummer in the band is, from what we can see, a 1980's Pearl kit, far too modern. (00:39:00)