Jean Harlow got me thinking about this, I had been looking at Laurel & Hardy stuff over the last few days and found out she was in 3 of their films, one in person and the other 2 as a person in a photograph. The one was she was in, in person, was a silent film, of which the sound track was redone in the 1960s as a talkie, with 'our' Chuck McCann doing the voices of both Laurel & Hardy.
So I was wondering if there was any knowledge of people appearing in photos in Columbo films? One big obvious one was Murder of A Rockstar and the people on the speeding tickets photos. There must be at least some more in other Columbo films.

It's been mentioned a lot, but there are all those William Shatner photos in "Fade Into Murder," including the Captain Kirk one.

Thanks, I never knew this! I will look out for them next time it is on tv.

There's also a bunch of photos of Janet Leigh in her bedroom in Forgotten Lady.

I've always wondered about the picture of Patrick McGoohan/Nelson Brenner next to the plane in Identity Crisis. Was it an early picture of McGoohan, a contemporary photo of him made up to look that way, or a photo of a stand-in pseudo look-alike?