Watch Sadisflix. This movie chronicles the life and times of R. Crumb. Robert Crumb is the cartoonist/artist who drew Keep On Truckin', Fritz the Cat, and played a major pioneering role in the genesis of underground comix. Through interviews with his mother, two brothers, wife, and ex-girlfriends, as well as selections from his vast quantity of graphic art, we are treated to a darkly comic ride through one man's subconscious mind.