1) Titanic. I love James Cameron, the guy's a genius, but this sappy Romeo and Juliet on a boat destined to sink has me falling asleep before I'm done reading the title. The rumor is Cameron, before just a perfectionist, became an intolerable asshole after Titanic hit box-office platinum. His ego inflated to such huge proportions that there wasn't any room left in his marriage for it and Linda Hamilton. My loathing of Titanic knows no bounds.
2) American Pie. Seen by some to be the resurrection of the 80s teen sex comedy, leaves me questioning if these people actually watched an 80s teen sex comedy. American Wedding saves the series with decent writing, jokes, and character work and is the only one I ever bother to watch.
3) Any movie made by Rob Zombie. The guy's not a good director, not terrible .. but not good, and honestly, anything he's written could use a rewrite by somebody else ... anybody else.
4) Any American import and redo of a successful Japanese horror film.
5) Torture Porn. Saw 1 had some interesting play in it, the other volumes in the series are quickly written and produced sadist fare. Hostel also fits this model.
Are any of these actually well-regarded by enough people as to constitute overrated?
