"Leaves of Grass" *** (out of four): If the thought of Edward Norton sharing a bong with himself makes you smirk, then you will probably enjoy this silly crime comedy.

Edward Norton burst onto the scene in 1996 with "Primal Fear," skillfully playing two sides of the same character: a stuttering walking nerve and a revenge-seeking manipulator. He takes on dual roles again in "Leaves of Grass," this time as identical twins who spend much of the film interacting. It's a gimmick, yes, but it can be a strangely effective one - just look at Sam Rockwell's surprisingly stellar "Moon." It works here too, namely because the acting is sharp and the film is proudly off the wall.

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