Jon Lormer who played Tamar in 'Return of the Archons' appeared to be in a Mormon commercial in 1986. It went like this in theme song. "Share a little bit of yourself".

However, the very wonderful, talented and beautiful Sheila Leighton was Luma in 'Spock's Brain' despite the massive resemblance she bore to Lynda Carter ( Wonder Woman) when they had a closeup of her great face and then Kirk stunned her with his phaser!