Identity Crisis when Columbo shows him the police sketch again only this time with him looking older and with a beard and he goes "ahhh Steinmetz"
I'm just watching it again now and I noticed a goof. I don't know as this has been spotted before. I went to the goofs page and didn't see it. There are links at the bottom of the page for pages 2 and 3 but the links are dead.
In the scene where Columbo first approaches Brenner at the conference they walk over to a table. Brenner picks up a small notepad from a briefcase sitting on the table. The shot changes to a close up only now he's holding a few sheets of paper instead.
"MILLER!!" (Butle Boy)
"I have some roses. White roses." (Speaking of retirment)
"I suppose you could call 'that' a uniform" (a stretch for the Colonel to compliment Columbo's police attire)
"I know you do" (answering Columbo's comment that Columbo needs his help.
In Identity Crisis "I must have mis-laid a day somewhere" was always a favorite of mine.