Let's see, what are mine:
One of my favorite game shows was High Rollers '78, only because I wanted to see what fonts they would use for the numbers that day; I even had my own little nicknames for the fonts when they came up. Observation: to my memory, it seemed that the most frequently used font on the show was Superstar.
As a kid, I didn't care for Match Game; I just remembered it for the theme song, the spinny box, and the confederate flag set.
Old panel shows (WML, TTTT, IGAS) bored me to death, though recently I've developed a new found respect for TTTT, it's a decent show in its own right.
I think they should bring back The Price is Right in its original format; even without pricing games, it was a very respectable show in its own right and has a solid format on the bidding element alone. I think that the unusual prizes the contestants bid on helps solidify the format.
I used to get up at 3:30 am every so often to watch Match Game '98 on WGN, I didn't think it was as bad a show as people made it out to be, although I thought the set(s), esp. the Rainbow Brite set was rather hideous. And the set designer was the same one who did the sets for MG '7x and MG '90. Go figure.
Jeopardy! '78 I actually liked better than its successor and predecessor; I though its format complimented similar game shows of its era very nicely. I always thought Final Jeopardy looked out of place to the point that it literally took me years to get used to it as an integral part of the show.