Might have to check out that film. I liked the idea that the aliens were hidden away amonst us, a bit like V I guess but I never watched that one.
I rate the 28 films, the early Romero (new stuff is dire), evil dead, zombieland and walking dead.
Other films Ive thought of (ie quick look on the hard drive):
Attack the Block, Abyss, Death Note, Hellboy, Inception, Predator, Total Recall, Strange days, Bladerunner, The Descent, Solaris (havent seen the original), The Thing,...
and erm, The Human Centipede?