I also like Beth Chadwick's little tantrum when she throws the lightbulb, kicks the chair, etc.

Ken Franklin also has a few good facial expressions when Columbo leaves after pointing out some of Ken's mistakes.

And I like Nick and Lily's reaction to Columbo's comment about their perfectly matching versions of the events the night of the murder. "After that performance we just gave...of all the nerve!"

To me, the all-time best case of this is with Ray Milland in Greenhouse Jungle. In later roles, he had that wonderfully intimidating way about him, and of course the actor Bob Dishy has always had that nervous look about HIM. As Dishy started reading him his rights, Milland gave him this "icy" look, and Dishy's voice started to falter. The fact that he was ARRESTING the man who was looking at him that way, didn't prevent him from REACTING to the withering look.

Not sure if this qualifies as "losing his cool", but watching Nelson Hayward (Jackie Cooper - "Candidate for Crime") efficiently dig his own grave while feigning outrage provided a nice combination of smuggness and futility. He had it all laid out, and then, WHAM, right between the eyes!

I see the expression of Ross Martin's eyes when Columbo pulls out the gloves at the conclusion of "Suitable For Framing" as an example. You would think the guy is being hanged.

David
Great example of the murderers face, Ross Martin did it so convincing,watching him crumble to bits when Columbo reveals his hands in gloves Great to show over and over again.

great examples...i had forgotten a lot of these. i *still* have not been able to see Beth Chadwick throw that lightbulb across the room. Every time I have tried to tape the episode, it was edited out.

you and me both laura.