Spock And Zebulon Walton On Columbo

Columbo is smoking a cigar while visiting Zeb who has just had an operation by Spock who has used dissolving sutures in order to kill Zeb.

In regards to Columbo's secondhand smoke, Zeb said, "It's the first human thing I've smelled since I've been in this hospital.  Smoke it."

There's a great scene in this one where Spock laughs and is cut short when Columbo slams something on Spock's desk and accuses him of murder.  Columbo laid into that Pre-Vulcan heart surgeon.