This is a longshot but here goes...
Someone on Reddit asked for helping remembering an old clip where a contestant mentions working with HDTV technology. They couldn't specify the show but I distinctly remember watching a P+ episode where they discuss HDTV being the future. I saw the episode around summer 2005 or '06, and I'm positive it came from the last few months of the run (late-1981/early-1982).
We also discussed the episode here, but I can't find the topic. Does anyone remember this, and if so could you point me to the episode? I'm 99.9% positive it was late in the Tom Kennedy era.