Never walked out of a movie, but only got through 30 minutes of "Guess Who" with Ashton Kutcher and Bernie Mac before turning the DVD off. Literally 30 minutes of a "comedy" movie and I laughed only once, and even that was borderline. And remember kids, blatant racism is funny when it's the black guy doing it! But honestly that wouldn't have bothered me at all if the racial humor was actually, you know, funny.