Some of my friends from a forum I help moderate are helping me with an article about elements of bad movies. We're just randomly coming up with aspects of bad movies.
We came up with a few:
*Unintentional humor
*Outlandish dialogue
*The ability to do "Samurai Theater" during a movie - Steven Weber demonstrated this on Wings one time, and it was hysterical (for example, he was watching a movie with slaves on a huge boat, and was singing "Row Row Row Your Boat")
*A co-worker and I both saw William Castle's movie "Mr. Sardonicus," and while the grimace Mr. Sardonicus's face froze in was supposed to be terrifying, we both kept imitating it at work, and cracking each other up. Again, a good example of unintentional humor.
OK....now you done it. I'm going to imatate Mr.Sardonicus at work Monday...scary thing is....no one at work will know what the yell I'm doing....or why....
HA!!! We still talk about it too!!!! And we saw the movie last summer!
Some movies are just so bad, you have to stick around to see how they end. My mom stayed up until 3:30 (or even later, I'm not sure) on a Friday night/Saturday morning watching the movie "Rebecca," even though she admitted the acting was just a little over the top, but she couldn't turn it off. She also kept complaining during "A Kiss Before Dying" that "Sean Young is an awful actress, and this movie is terrible" one time, but when I told her to turn it off, she admitted she "needed to see how it ended."
Endings you see coming 20 minutes before the movie's actual end is another criterion of bad movies.