Couldn't stand most of his music myself but I've heard him interviewed and he sounded like an intelligent level-headed guy who listens to a lot of music that doesn't sound like his. Made me wish I could like his stuff enough to buy his albums (or even one).

I can think of some other contenders for law 'n order restorers:

Mandy Patinkin sings broadway hits.

Aaron Neville's tremolo extolling "the fabric of our lives."

William Shatner's 60's albums alternated with Leonard Nimoy's. On the other hand, might drive the older generation into committing crimes of violence...

Alvin and the Chipmunks (A lot of older folk might not like 'em but then most of what they sing would be out of their hearing range, anyway).