What was the worst plot twist in TV / movie history?

[PorkChop]

I raise you this, the Neighbours storyline which turned out to be a dog's dream:

[Daz]

I don't know if it's so much a twist, but I hate the change in direction in the movie Flight Plan. That movie was engaging as hell for about 50 minutes, then it turns into a generic crazy terrorist piece of shit. Horrible, horrible ending.

[prophet]

I watched 'Remember Me' the other day. It's an easily watchable film I suppose, nothing special at all - the epitome of 'meh' really. Anyway I'll post the next bit in spoilers on the off chance anyone gets pissed that I ruined it for them.

Spoiler:

Basically Robert Pattinson hates his Businessman father because he'd always put work before family and neglected him growing up and was now doing the same to his little sister. After getting arrested by a cop Pattinson's character seduces his daughter as an act of spite/revenge (seriously) but wouldn't you know it...he falls in love with her.

The film essentially goes the way you'd expect - she eventually finds out the truth about why he began seeing her and is pissed but eventually forgives him. Pattinson and his father eventually reconnect and his father eventually discovers the error of his way and finally begins to put family first. All is well in the world right? Right?

Wrong - Pattinson goes to his father's office to wait for him but then we discover that the date is September 11th 2001 and the office is at the top of the world trade center. Pattinson dies in 9/11.

[Viazon]

I actually thought that was a decent movie. Was dragged to see it by a girl and it far exceeded my expectations. And I thought the ending was good.

[blackparade]

The Roseanne finale when it was revealed that Dan had died and she was writing a book about her life that made up the last 2 seasons....boooooo.

[ShaneOfan]

The Roseanne finale when it was revealed that Dan had died and she was writing a book about her life that made up the last 2 seasons....boooooo.

It didn't bother me to much considering the show had already jumped the shark way before that. I mean the Under Siege rip off episode? Jesus Christ.

Honestly a bad one is that Luke and Leia are siblings. Set the incestiness aside. It was just to perfect of a wrap up with her ending up with Han but letting Luke be happy in the end. Of course he isn't upset Han is getting to lay her instead of him, it's his sister. *Cue laugh track*

[War Daddy]

The Roseanne finale when it was revealed that Dan had died and she was writing a book about her life that made up the last 2 seasons....boooooo.

Wow, my whole life just got ruined.

[UTK]

The Roseanne finale when it was revealed that Dan had died and she was writing a book about her life that made up the last 2 seasons....boooooo.

I didn't mind that to be honest. At least it explained why the show became so ridiculous.