For me, a surprise or trick ending is only a gimmick if the movie is ruined by knowing the ending. Some movies, though, are worth watching despite knowing the ending.
So, what movies have surprise endings, but are worth watching anyway?
Sixth Sense, The
Unbreakable
Village, The
Usual Suspects, The
Game, The
Friday the 13th, The (just ignore the part with the boy in the lake... the whole section with his mother was fantastic, and one of the best ideas for a horror movie I've encountered)
Conversely, some movies just aren't worth watching when you know the ending. Please don't mention them here
