Conversation so far:
who wrote the theme song for the wonder years
The theme song for the Wonder Years was With a Little Help from My Friends  a song written by John Lennon and Paul McCartney.
who is the main actor in the Wonder Years
Set in 1960s suburbia, the show followed Kevin Arnold (Fred Savage) and his family and friends as he navigated the ages 12 to 17.

Question: what other actors have major roles
Self-contained rewrite: what other actors have major roles in the Wonder Years