We've seen New Yorker cartoon editor Bob Mankoff be The Decider when it came to selecting the funniest audience-submitted captions at the Art Center conference last year, and the process was quite entertaining. Imagine what happens when he passes judgment on entire cartoons? That's what's going to happen on an upcoming episode of WNYC's "The Leonard Lopate Show."

Submit your best cartoon on the theme of "Thanksgiving" by posting it to their Flickr group by November 14. Mankoff will be on the show November 21 to discuss the submissions and pick his favorites. We're hoping the winners get something...canned cranberry sauce, at least.