I just picked up a "dead" Mac 128 that is quite interesting. There's an upgrade inside of it that adds memory and a SCSI port. The board is a Digi-Graphics "Simmer". I cleaned the machine up, checked all the soldering, re-seated everything and now it works. The other interesting thing about it is the fact that on the inside of the rear case there are no signatures. I have several other machines (128, 512 and Plus) and they all have the signatures in the case plastic. Anybody ever seen a compact Mac without them?