Christopher Knight, more recently of "Celebrity Circus", played Peter on this classic family sitcom
... Celebrity 
Circus is an American version of the Celebrity Circus reality television ... Celebrity 
Family Feud .... Joe's World is an American sitcom television series that aired 
from... [DOC] [TLE] Christopher Knight Photos, News & Updates - netStudio [PAR] Christopher Knight met life as a child actor, starring as "Peter Brady" in the TV 
classic hit show The Brady Bunch (1969).