Peter Sagal

As host of the NPR news quiz Wait Wait... Don't Tell Me, Peter Sagal spends a lot of time reading the newspaper.

Lately, though, he's also spent many an hour going to strip joints, a swingers club, a porn-movie set and casinos — among other dens of what some call iniquity.

All research, of course, for his new project, The Book of Vice. He wanted to get a perspective on the indulgences of others, and report back to the rest of us.