A piece of whimsy, set in Providence, involving two terrible singers (Sam Rockwell and Steve Zahn) who are mistaken for safecrackers and become entangled with rival Jewish gangsters (Michael Lerner and Harvey Fierstein). Writer-director John Hamburg’s American indie comedy is no great shakes as a movie, but it carries a distinct goofball charm. The crosscutting’s awkward (most obtrusively at the beginning and end) and motivations are barely sketched out, but the actors seem to be having a pretty good time. How amused you’ll be, though, will have a lot to do with how long you can remain tickled by such conceits as a bar mitzvah in which father and son are dressed in sweat suits. With Paul Giamatti, Christina Kirk, and Michael Schmidt. (JR)