Yeah, I don't like Equilibrium. Not REALLY don't like it, I think it was just a mediocre and silly action movie with serious background problems. But that's not what this thread is about.
"Broken Lizard's Club Dread" is one of my favorite comedies. Hilarious parody of a slasher flick. But very few people I know like it, and when I loan people my copy they give me funny looks when they hand it back.
"Dark City" is one of my favorite sci-fi flicks. No one I know who has seen it hasn't loved it, but it is surprising how few people have actually seen it. For first timers, I recommend the theatrical version over the recent director's cut.
"Moon" is a 2009 independent film that is awesome. Very old-school science fiction story that they just don't make enough of nowadays.
"The Girl Who Leapt Through Time", the 2006 animated version, is an amazing anime movie based on a classic and oft-remade Japanese novel. Wasn't released in theaters in my area, so very few people I know have seen it.