I love the show Chain Reaction.
I like Jeopardy and Wheel of Fortune because it's fun to play along with both of them from my living room sofa. (I wish Password would come back ... I loved that one too.)
I like "Who Wants to be A Millionaire", because I so often get the answers right. :) It's the only one I've ever watched much, in recent years.
Match Game '73 - '76
I don't care for game shows or reality shows.