Top runners:
Lost Ending
Dexter Ending
Artistic Integrity
Dragon Ball GT
Dragon Ball Evolution
Jurassic Park 3
Zilla '98
Star Wars Episode 1
Star Wars Episode 2
Jar Jar Binks
Much of the Star Wars Extended Universe
Naked Cartwheels of Liberty
Sutherland
And, most recently,
[spoiler]Makorra fanbase drowning themselves in their tears[/spoiler]
CAN'T FORGET THE BATFLECK
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Edited by Dusty: 10/6/2013 4:45:21 PMME3, my favourite part was how some fans couldn't accept that Bioware wrote a shitty ending and deluded themselves into believing that Shepard was indoctrinated and it was all part of Bioware's "master plan" to release "The Truth" as a DLC.