Advanced CGI facial animation and body movements, advanced photorealistic motion capture
Video (HD 1080p)
1) Features motion capture for all actors and has realism as its foremost goal. The largest team ever assembled for an Sony Pictures Imageworks-produced movie (as of 2007) generated new animation tools for facial, body, and cloth design especially for the movie, and elements of keyframe animation were incorporated into the movie to capture the facial expressions of the actors.
2) Crispin Glover portrays Grendel in a similar motion-capture method as Andy Serkis did for Gollum in Lord of the Rings trilogy. Glover and Serkis were both born of the same day; April 20, 1964.