Who played Radar O'Reilly in 'M*A*S*H'?

Who played Archie Bunker in 'All in the Family'? Who played Edith Bunker in 'All in the Family'? In which TV series is Edith Bunker a main character? In which TV series is Hawkeye Pierce a main character? Who played Klinger in 'M*A*S*H'? In which TV series is Klinger a main character? Who played Fred Sanford in 'Sanford and Son'? Who played Arthur "Fonzie" Fonzarelli in 'Happy Days'?