RU.08 said:

CG Yoda is in one short shot in the original TPM - when he walks over to Obi-Wan and says "confer on you the level of Jedi Knight the council does".

I noticed that for the first time as I was watching Schorman's version just now.

I think all CG is better than the puppet they got in TPM though. It seemed way less expressive than the ESB one.

I heard a rumor that the TPM puppet is the same as the ESB version, just shriveled and stiff from being in storage. But I think that's BS.