Dave, I love you for starting this thread with my all-time most hated loved movie. What a piece of garbage.
I would also add Todd Solondz, American Beauty (I will admit that I really did like it when it first came out, but realized I had been bamboozled), and most PT Anderson films except for TWBB and about 2/3 of Boogie Nights. In terms of uncontroversial (in these parts) opinions: Fight Club, anything by Kevin Smith, most of Oliver Stone's oeuvre. I hated Reservoir Dogs, plus anything Tarantino's done except Pulp Fiction.
I thought Pi was totally overrated, though I didn't hate it.
I liked Little Miss Sunshine, though a lot of my friends hated it. I guess it was a little overdetermined. Liked Amelie and Life is Beautiful just fine.
My most controversial opinion of all: I really do not get Godard. I understand his importance in the history of cinema, etc. etc., but I have yet to be able to stay awake through one of his movies.