I Was Right. As Usual.

I service society by rocking. I’m out there on the front lines liberating people with my music. Rocking ain’t no walk in the park, lady. - Dewey Finn

Alright, let's pray. God of Rock, thank you for this chance to kick ass. We are your humble servants, please give us the power to blow people's minds with our high voltage rock. In your name, we pray. Amen. - Dewey Finn

Moi a few years ago:

I've always thought the greatest example of an actor being matched with a character was Jack Black in School of Rock

And here's the director of the movie on the movie's 10th anniversary last year:

"School of Rock was conceived around Jack so completely that there's really no separating that."