The Significance of the Stigmata Scene *spoiler*
Okay, here's my personal interpuitation of the scene where Alan does his song and dance, then bleeds out of his hands:
This is symbolic of the way many Christians percieve Jesus. Jesus had some wonderful teachings about doing unto others and turning the other cheek (his song and dance), but unfortunately, the masses do not respond. But when he begins to bleed out of his hands (the crucifiction), the people go nuts. The masses like blood and guts, and Jesus' crucifiction is a safe outlet for it. Because he did it for our sins, it's not only okay to focus on it, it is encouraged. (Consider the blockbuster success of "The Passion".)Thus you have an unfortunate majority of Christians who ignore Christ's teachings and focus on his torment.
But as Dennis Miller says: "Of course, that's just my opinion, I could be wrong."