There's boatload's of irony now when you watch the documentary, "The Beginning" on the Phantom Menace. Frank Oz is underneath the stage working Yoda, but amazed at all the Green Screen (Chroma-Key) stuff they are doing and he says, "Pretty soon you won't need me, George!" Well, not only from that point on was yoda CG (ATOC, ROTS), but with them going back and CG'ing TPM (which sadly I am in favor of...TPM yoda is creepy and bizarre for unintentional reasons), well its got to make you chuckle. Poor Frank.