For me, the Match Game/Hollywood Squares Hour comes on top of the list, full stop. Yes, I know it paled in comparison to its separate parts, and I know all the ways the game was "broke" by heart. But I don't think it was a bad show, nor a bad idea. MG and HS fit together as shows driven by celebrity humor, after all. Had Mark Goodson not made HS more SRS Business (compared to the Marshall run), it would have clicked better. But to this day I still like the show and watching any "undiscovered" episodes on YouTube. And Jon Bauman wasn't awful...I've seen worse...
As for overrated opinions...
- Family Feud with Richard Karn mocking. Not that I don't find the DOUBLE THE POINTS meme funny or rooted in truth, not that I think it was the BEST version of FF. But that particular chapter of the 1999+ series helped shape its high points, starting with the O'Hurley run. The set started looking like a mix between the Anderson one and the classic one, and they brought back a semblance of the classic rules.
- Mike Richards hate. Then again, I like TPIR and LMAD all right and think the core of both games still exist.
- TTD '90 ruined EVERYTHING about Tic-Tac-Dough. OK, if there was a better host and NO RAPPING CHARACTERS*, maybe people wouldn't be so hard on it. But the game didn't really change save for altered shuffling, the pot reset, and altered bonus game.
* - I admit it, though, the Rapping Dragon is a guilty pleasure...