IIRC, the made-for-TV movie "Get Smart, Again!" has an A1000 in it, used to show criminal profiles. I saw that when it was broadcast in 1989 so my memory might be wrong.
The music video for Peter Shelly's "Homosapien" has a PET in it. It's a large keyboard model, but the display appears to be 40-column and white, so I think it's a PET 2001.
I remember seeing a VIC-20 in a music video by... America? No clue what song.
I thought the old Commodore machine in Kirk's office wasn't a PET 2001. I thought it was a B-Series machine. But what do I know? It's been ages since I've seen it.