I didn't think Matt played Big Bird in the street appearances, just JTE. The last one I saw was the one with Ernie and the tape recorder. (Afterwards they showed a sketch with Ernie and Grover singing a song about opposites. Was that Eric or Frank playing Grover there? If it was Eric, it was really good. It sounded like Frank) Anyway, Big Bird's voice was a little bit off there. I don't know if that was from the second series, maybe it was recycled from last season.
Anyway, I heard the voices on Oprah and I really can't complain. (Well, other than the fact that the sound was messed up because the tape didn't come out right.) The only thing I want to mention was that Grover's voice seemed a little too soft. I thought Eric did a better Grover before. Anyway, I really enjoyed that segment.