What are other famous celebs that you know of that appeared on the Wonder Years?

These are the ones I can come up with off the top of my head:

Giovanni Ribisi
Alicia Silverstone
Seth Green
Kelly Packard (BayWatch)
Ben Stein
David Schimmer
Ben Savage
Dustin Diamond
Larenz Tate (Menace II Society)
Andrew Shue (Melrose Place)

Mark Paul Gosselar from Saved By The Bell.