DuracellEnergizer said:

The X-Files (1998)

This was basically an extended Mytharc episode, which makes it twice as tedious, boring, and pointless as it would have been otherwise.

Fuck you. Just sayin'.

;)

Back to the Future, Part II (1989)

To call this a haphazard mess would be an understatement. The time travel rules make even less sense this time around, almost every character who shows his/her face is obnoxious, and the whole idea of going back to the events in the first film was a stupid, stagnant idea. If it wasn't for Michael J. Fox and Christopher Lloyd, I'd hate this movie.

I think two is actually my favorite Back to the Future movie, which isn't saying much. About a year ago I went back and watched the whole trilogy and was thoroughly disappointed. These were some of my favorite movies when I was younger, and after not watching them in so many years, they came off as really cheesy and over-the-top. But I still felt the second one was a ridiculously fun revisiting of the original, and I really enjoyed the cross over. Three on the other hand, I felt was just silly through and through.