Keith is right, Grindhouse is 3 films. Last year votes for Grindhouse, Death Proof and Planet Terror were all accepted. Kill Bill, as last year, seperate movies.
As for movie series like LotR, Star Wars, etc etc, they'll obviously be counted as seperate movies. Anything listed as a mini series or tv series on imdb will not be eligible, so please don't waste your votes on Decalog or The Wire. The Red Riding trilogy, although made for TV, aren't listed as such on imdb and thus are eligible, but as seperate entities.
TV movies also eligible.
I think that clears up most of the issues?