I love, love, LOVE both Columbo episodes with Jack Cassidy. Also - the Pat McGoohan ones are delightful. I also like the one with Nicol Williamson and a very young Kim Cattrall, where Columbo outsmarts the killer via dog-training.

What about Billy and Patti from "Young Turks"? Billy pierced his ears and drove his pickup like a lunatic! Come on - that's got to rate a mention!

…behavior once thought BE-NIG.