I've never walked out of a film that I went to see in a theater, but I've come damned close a time or two. Most of the time this has to do with people that bring their children to films they should not be bringing them to in the first place and showing their complete inability to be a parent by letting junior run up and down the aisles screaming. But I digress.
(I mean, seriously, what parent looks at "Sin City" and says, "Oh five year old Billy will just LOVE that!"?)
I have walked out on several videos being shown at houses of friends and neighbors. "Wing Commander" took about five minutes, and the complete Adam Sandler ouevre is enough to make me want to throw myself in front of a moving train ("Little Nicky", I'm looking in your direction). No other film, however, has made me roll my eyes and wish I could get the two hours I wasted on it back more than "Batman and Robin." Even though he directed "Falling Down", I want to hunt Joel Schumacher down and force him to watch it over and over until he realizes how awful it was and promises to never do it again. "YOU ARE NOT ECONOMICALLY VIABLE, JOEL!"
I have a feeling that I'm going to want to walk out of the "Fantastic Four" movie, if I actually go see it. Julian McMahon and Michael Chiklis can't save this one, I fear.