Historic, folkloric, and reliably sophomoric . . . Car Talk's Puzzler segment is beloved not only for making you think, but also for making you laugh. It's not just a puzzle, and it's only occasionally about cars. It's a cleverly constructed conundrum wrapped in a hilarious tall tale, with characters ranging from Bubba the monk and Igor, the hunchbacked groom, to game show host Monty Hall and an electricity-obsessed Thomas Edison.