Dark Crusade, by Karl Edgar Wagner, copyright 1976; Warner Books, December 1976, reissue May 1983.
Spider-Man 2, 2004; directed by Sam Raimi, starring Tobey Maguire, Kirsten Dunst, James Franco, and Alfred Molina. Good.
Pitch Black, 2000; Directed by David Twohy, staring Vin Diesel. Enjoyable action adventure flick.
The Butterfly Effect, 2004; directed by Eric Bress and J. Mackye Gruber, starring Ashton Kutcher, Melora Walters, and Amy Smart. Good, though somewhat disturbing.