Sometimes there's just nothing more absorbing than watching a movie that truly looks at life on the dark side, revealing those dark parts of human nature that we find so fascinating. In Roger Ebert's picks of 27 Movies from the Dark Side, he offers a varied selection from a look at the seamy side of life in L.A. in Chinatown to a backwoods murder gone wrong in Blood Simple. Throw in two classics from Alfred Hitchcock, Notorious and Strangers on a Train, and two French tours de force, Bob le Flambeur and Touchez Pas au Grisbi and you've got the primer on film noir.