Originally posted by: Adamwankenobi
Well, if you've seen the interview that moviefone had with him and Lucas, he fully acknwoledges that he knew exactly what he was filming.

Actually, I have that interview saved to a CD and, I posted a thread here about it(I don't know if that thread is still around though). Here's exactly what he said:

"Well, I got a real kick out of it. You know I uh, I, I, I, I wouldn't have otherwise have the opprotunity to see myself standing next to Alec Guiness and, and that was neat for me. It, it allowed me to be in the original trilogy as, well. I feel just more embedded in, in, in the saga. So, so I really, I really liked it. "

Nothing saying that he knew that he was being filmed. Just that he liked seeing it.