Neil Marshall's debut film, 2002's Dog Soldiers, is a great little action horror film pitting a handful of British soldiers in the Scotland highlands for training exercises against a vicious pack of exquisitely-designed werewolves. Fast-paced, with good performances from Sean Pertwee, Kevin McKidd and the rest of the cast. The script is relatively smart, too, with some genuinely inventive suspense sequences and a nice, black sense of humor.
I bought the DVD back in '03 or so, and really enjoyed it, but hadn't watched it again since. Spinning it tonight reminded me how much I liked it - it's a fun, different kind of werewolf movie. I haven't liked all of Marshall's follow-up films, but his cave-crawling thriller The Descent is a damned good scary flick, too.