A romantic comedy in which a woman married to a math professor wonders what it would have been like to have been with her old boyfriend and so convinces her girlfriend to sleep with him and report back. Since the old boyfriend is played by Brad Pitt, perhaps the friend didn't do so much of a favor as the title suggests! As you can imagine, the idea that the math professor is not as sexy as the old boyfriend is key to the plot. Cute mathematical scenes include the mathematician singing a blues song (accompanied by a harmonica) about his research while sitting at a computer showing fractals, his wife trying to seduce him while he cluelessly talks to her about math and blues, and his mathematically flavored discussions with his friend Joe (another mathematician with an overinflated ego) about his wife (``A body at rest remains at rest, a body in motion remains in motion remains in motion unless acted upon by an outside force. I think we both agree, Kathy is a body in motion.'')
