What have you watched for no other reason than the presence of someone you knew from game shows?
I started watching Hogan's Heroes only because I'd seen Richard on MG and FF.
I watched Teresa Ganzel and Ed Begley, Jr., in Transylvania 6-5000.
I gave the parody miniseries Fresno a shot because Teresa was in it, although even as a parody, it didn't hold my interest long enough to see her.
I'm not sure whether I watched Hotel because of Heidi, Michael and Nathan, but I was certainly aware of them at the time I watched.
Dick Clark Productions (with Bob Stewart) had a series, You Are the Jury. Until I researched it for this post, I thought it was a one-time special, that's how little awareness I had. Anyway, the May 1986 edition had Constance McCashin in it, which is the only reason I knew about it, let alone saw it. (As it turns out, Meg Bennett was one of the writers as well.)
(As much as I love Get Smart, my decision to watch that was based purely on seeing the promos. Barbara Feldon was a bonus.)