ADDITIONAL NOTES: completed airing its fourth season on 5/6/14; has yet to be renewed for a fifth season
DESCRIPTION: (from PBS's press release, October 2013) PIONEERS OF TELEVISION -- Tuesdays, April 8-29, 2014, 8:00-9:00 p.m. ET -- More than 200 breakthrough stars bring their stories to life in season four of this Emmy-nominated documentary series. Each episode melds compelling new interviews with irresistible clips to offer a fresh take on TV's biggest celebrities. Featured stars in this season's four new episodes ("Standup to Sitcom," "Doctors and Nurses," "Acting Funny" and "Breaking Barriers") include Jerry Seinfeld, Robin Williams, Roseanne Barr, Bill Cosby, Tim Allen, Ray Romano, Noah Wyle, Anthony Edwards, Diahann Carroll, Howie Mandel, Bob Newhart and many more.