Hitting theaters February 1 is Warm Bodies, director Jonathan Levine's zombie romance that puts a new spin on the undead genre. If you ever wanted an up close and personal look at how actors stay in character as a zombie, then you're in luck. Rob Corddry, who plays M, takes us inside his extensive process of becoming a zombie, both on and off the set, in a new video that explores the depths of method acting. Take a look at this humorous featurette, also featuring co-stars Nicholas Hoult, Teresa Palmer, and Dave Franco.