When Leonard and Penny open the door to the apartment, and see Sheldon sitting in the lounge chair, there's a plasma TV in the middle of the floor. In S3 E22, The Staircase Implementation, when Sheldon invites Leonard in for the first time, he as a CRT TV.
Geppetto did not make Pinocchio into a real boy, the Blue Fairy did. Sheldon would have known this.