EIGHT IS ENOUGH: The pilot for the TV series EIGHT IS ENOUGH
began with MARK HAMILL playing the oldest brother David. Hamill appeared
only in the pilot. Grant Goodeve replaced the blond Jedi.
AND THEN, AFTER THE PILOT EPISODE, MARK HAMILL WENT TO OUTER SPACE AND GRANT GOODEVE GOT THE CALL TO PLAY THE PART OF DAVID FOR THE REST OF THE SERIES