I collct Transformers too, and like munch, I 
especially collect G1, and the Japanese stuff. 
(Re-issues, etc) I would love to find some TF 
movie cels, but I've had no luck so far :( Hey 
munch, I'd love to see the TF cels you have :)

Oh, and I don't know whether you've sen this 
site:

http://transformers.rubberslug.com/gallery/home.a
sp

This guy has some GREAT TF cels.