Grant Imahara signed card. Obtained through the mail. Mr. Imahara was Model Maker for Star Wars: The Phantom Menace, Star Wars: Episode II: Attack of the Clones and Star Wars: Episode III: Revenge of the Sith.   He also worked on R2-D2 Beneath the Dome.  Currently he can be seen still working on Battle Bots and Myth Busters.  Two unique shows.