I've used game shows (especially Price is Right and Press Your Luck) as examples when teaching probability and statistics. I also recently gave a talk on Press Your Luck at a math conference in New Orleans. It can really be hit-or-miss with my students; I've had classes that absolutely loved it, and others that weren't really into it.
My girlfriend tolerates my game show geekiness, but definitely doesn't share it (nuts!). That's how a lot of my friends are as well, but there are a select few that are genuinely interested in talking about them. My mom and grandmas definitely love watching and talking game shows, though...both fondly remember watching the USA reruns, GSN, and a bunch of other shows in the '80s.
/both had huge crushes on Peter Tomarken and Jim Perry as well...
Anthony