Edward Norton plays the roles of twins in Leaves of Grass, an upcoming dark comedy movie set to be released sometime in 2010:

Leaves of Grass Trailer

(Click on the poster to enlarge it.)

(Click on the poster to enlarge it.)

Plot:
“The lives of two identical twins, one an Ivy League philosophy professor, the other a small-time and brilliant marijuana grower, intertwine when the professor is lured back to his Oklahoma hometown for a doomed scheme against a local drug lord.”

Here’s the movie trailer of Leaves of Grass if you haven’t seen it yet:

LEAVES OF GRASS
The release of Leaves of Grass has been pushed back more than once, let’s hope it’s for soon!
:)