Comedian Jason Kravits can write a Broadway hit, on the spot. That's the premise of his improv cabaret show, where he invents tunes based on audience suggestions, such as "Yom Kippur" or "a Victorian sewer." The show, Off the Top, is on the second Saturday of every month at the Duplex in Manhattan. His next show is Oct. 14 at 7 p.m.

In the Spiel, the Environmental Protection Agency.

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