Daniel Rubin, who writes the blog Blinq for the Philadelphia Inquirer, had This site posted a while back. It's called 'Jews Rock' and, much like Adam Sandler's 'Chanukah Song', divulges who is Jewish in the world of music. There is even a quiz to test your chutzpah.
60% (12 of 20): You call yourself a Jew? (If you don't: not bad!)
Well, I found it interesting anyway...