"Dave Chappelle-For What It's Worth" finds the Comedy Central superstar in performance at San Francisco's legendary Winterland, where he's welcomed with a huge ovation. Easing into his set, Chappelle shares a few observations about the city itself, noting there's nothing tender about the Tenderloin District: "You've got people smoking crack while sitting in front of Starbucks." Chappelle's inspiration dips a bit after that, as the subject of sex with monkeys and smoking weed with Indians doesn't quite reach his usual standards. Then, suddenly, he's on top of his game again, his material like an echo of vintage Lenny Bruce as he discusses why whites drink grape juice and blacks drink "grape drink," why police harassment has led him to believe in impromptu alibis, and why the culture of celebrity should stay away from real-world issues: "Maybe Jah Rule doesn't have the answers we want in a disaster." "--Tom Keogh"