Yes, yes, this is a zombie thread. This needs clearing up though regardless of what year you're reading it in!
ziggy is the bloke you never see out of quantum leap ? If anyone remembers that!
Ziggy's not a bloke, Ziggy's the hybrid computer that links both Al and Sam together.
Quantum Leap Geek
Ziggy from Quantum Leap is the first thing that popped into my head as well when the name was mentioned!