Yes Herbie and Tatia, you certainly have a "few" more double dipping guest stars. I thought of one more--James Seay--but Herbie just added 16 more, so I feel a little silly posting this. But after going through the trouble of making the screen captures, I'm going ahead anyway. James Seay sold a tape recorder to Kelly and Scotty in Cops and Robbers (I forget exactly how it was used to save the day). And he helped Scotty figure out what was in Kelly's Ouzo in The Lotus Eater.
I remember him best as Kris Kringle's gerontologist in Miracle On 34th Street.