Yeah he was he went to Wil Wheaton's house and they both became friends and Wil then gave a figurine to Sheldon and then Brent Spiner ripped it open very funny
Burton was briefly in on episode. And Penny is William Shatner's daughter in the latest Priceline commercil.
Well, too bad if the OP was asking so he could track down the episode and see it for the first time...