Hannibal. Please erase the book of that title, too–this is definitely not a case where they took a good book and ruined it. And I think it fits the O.P. perfectly, too–I thought Silence of the Lambs (the movie) was great, and the books (Silence of the Lambs and Red Dragon) were superb. But as far as I’m concerned Hannibal was never written, m’kay?
I can see why you might hate the latter. 
I was sort of considering watching “Meet the Feebles” but I’d have to be in the right mood…Though I have seen one other of his movies.
As for movies I wish never had been made…maybe every Lifetime movie. Though they are kind of mildly entertaining. I’d classify that under anti male propoganda. 
Citizen Kane. The Beverly Hillbillies. Speed. Beast (it was a great book, but it just lost something in the transition to the big screen).
…lessee…Mulan, Pokeman, and lots of those kinds…just not my speed. I’d go for Heavy Metal a whole lot faster.
I can’t really think of many more, as most of them have already been listed.
Oh well.
Kim, “Movie challenged”
The Dungeons and Dragons movie should never have been made. Never.
It could have been so good. It could have emphasized the incredible teamwork that is at the heart of every good game, the hours of work a DM spends spinning intricate plots for the characters to get caught up in, the magic that forms the foundation of a good campaign world…
Instead it emphasized Jeremy Irons overacting, and a bald guy in periwinkle lipstick. And the death of a guy named Snails.
Thousands of people have spent weeks, months, years of their lives deeply immersed in each others’ imaginations thanks to this game, and been mightily entertained. And all the movie can come up with is a rehashed action-movie plot and dialog that’s so bad, even laughing at it makes you nauseous?
“Give me the rod!” indeed.
I agree with your dislike for Batman, it ruined Batman for me (especially that awful Prince song!!). Anything by Tim Burton, but especially “Nightmare Before Christmas.” What’s with the stripes all over everything?
Home Alone. My God, could anything be more inane? That kid couldn’t act his way out of a torn, wet paper sack.
If there was a visible boom mike it was almost certainly because the projectionist did not have the movie framed up properly, not because of an error on the part of the filmmakers.
“Nothing But Trouble”, from the early 90’s, it had a promising cast for light comedy, (Dan Aykroyd, Chevy Chase, John Candy, Demi Moore) and turned out to be just about the least funny movie I’ve ever seen. Stay far away from this movie. There is a reason you’ve never seen it on cable TV, even with the rest of the merely inane and tedious…