Crispin Hellion Glover. Acted in Back to the Future, The River's Edge, Teachers, At Close Range, Rubin and Ed, etc. Likes to make dioramas of farm animals being swallowed by lava. Glover caused David Letterman to almost wet his pants, took three years to film his latest work, What Is It?, and has mentioned Luis Bunuel as a major influence. Dad Bruce Glover was the villain in Diamonds Are Forever.