A long-running show like Knots Landing will usually have a long list of guest players. If they're lucky, they might end up taking a one-shot guest performance and turn it into something more, like a recurring player. Others might appear once or twice in a pivotal role, but their performance is so memorable that they may make a mark much larger than actors who appeared more often. This afternoon I was watching two, back-to-back episodes of the sitcom Benson on FamilyNet, a cable channel that airs a lot of classic sitcoms. In the first, Laurence Haddon (infamous as Val's evil Dr. Ackerman) played an undercover officer trying to weed out corruption in their fictional state. Seeing him in this reminded me that he was a frequent guest star on many shows (even Dallas). Seeing him play comedy was an interesting switch, since Dr. Ackerman was one of the most humorless characters ever on KL. But in the very next episode, Benson has a lobbyist girlfriend played by Saundra Sharp, who played Dr. Ackerman's accomplice, Nurse Wilson on KL. Oddly, the two actors did these guest spots back-to-back in 1981, several years before they worked together on Knots. Rather than generate a thread just to share this entertaining coincidence (and give this thread the title "Before they Were Baby-Snatching Felons"), I thought others might share some of their experiences spotting KL actors in other roles, especially the supporting/featured actors who likely only thought of their Knots roles as one in a long line of performances. Who else have you spotted, and where?