You'll definitely need to click to expand.
Sent to me by Chris Swanson, who blogs on science at wily badger. He found it here, where, incredibly, there is no credit line for the artist. Let me know who drew it.
Roger Ebert was the film critic of the Chicago Sun-Times from 1967 until his death in 2013. In 1975, he won the Pulitzer Prize for distinguished criticism.