Cookie-Cutter plots can work sometimes. Often, it's the movies with original plots that end up sucking.
Worst movies? Let's see...Dude, Where's My Car? was horrible. The Dungeons and Dragons movie was shit too, and I'm a Dragonlance fan. The movie North with Elijah Wood sucked really bad, and not because I hate Elijah Wood or Bruce Willis. Mortal Kombat was pretty crappy. Anyone notice that it's harder to think of crappy movies than good movies? I guess it's a good sign that I'm trying to subconsciously forget the crap movies.
-Lasereth