My wife and daughter do this a lot, but their version is to quietly look up the actors and then announce their results during a lull, so it works out fine. I just do it in my head so I'm like yeah I know, she was also in whatever with Val Kilmer.

There are certain TV shows where you could spend the whole time figuring out who used to be in what - in the 80s Murder She Wrote featured just about every middle-tier actor from the 60s or 70s. Before that they were on The Love Boat. Seems like there must be a modern show full of 90s through 2010s actors but I don't know what it would be. Hey, there's Topanga!