Quote Originally Posted by Woochifer
I voted for Batman and Robin, my gawd what a horrible all-around abortion of a movie that was.

And the nipples on the batsuit, WTF was that all about?! Maybe this was one of the deleted scenes:

Robin: Holy refugee camp! I'm starving Batman!
Batman: Hang in there boy wonder, I've got just the thing. I'm wearing my new Batlactator suit! Here, suck on one of these...
Robin: IIIIIIIIIIII ddddon't knnnnow, those don't look very safe to me.
Batman: Oh man, did you catch me in the batcave nursing myself? You weren't supposed to see that!
Robin: Yeah, talk about disturbing sights! You know I'm not down with double dipping, so why you offering me those sagging flesh sacks? You wash those skanky pointers before you go about offering them to someone, okay?
Batman: Sorry 'bout that! Next time, I'll remember to bring an extra energy bar.

I thought the series was buried and gone after the Batman and Robin debaucle. Thankfully, the studio allowed some time for that stench to air out, and totally reboot the series with Christopher Nolan's almost miraculously good Batman Begins.

Some other stinker sequels that come to mind:

Speed II
Under Seige II
Beverly Hills Cop III
Another 48 Hours
Superman III & IV
Matrix Reloaded & Revolutions
Jurassic Park II
Robocop II & III
Rambo II & III (First Blood was actually a good movie)
Yeah, I'll second that vote for SPEED 2 (MAN was that horrible and COMPLETELY unnecessary) and UNDER SIEGE II (COMPLETELY unnecessary and NOTHING like the original). AND Jurassic Park: The Lost World, too. All good examples of horrible sequels, yes, agreed.

Although, I gotta say.....I LIKED Beverly Hills Cop III......