Extras

    Video thumbnail: Pioneers of Television Cloris Leachman Talks Comedy

    Pioneers of Television

    Cloris Leachman Talks Comedy

    Emmy-award winner Cloris Leachman shares her acting philosophy.

    Cloris Leachman Talks Comedy

    Video thumbnail: Pioneers of Television Jimmie Walker on "Good Times"

    Pioneers of Television

    Jimmie Walker on "Good Times"

    Walker's "Good Times" character was such a hit, he changed the direction of the sitcom.

    Jimmie Walker on "Good Times"

    Video thumbnail: Pioneers of Television Dick Van Dyke's Knack for Physical Comedy

    Pioneers of Television

    Dick Van Dyke's Knack for Physical Comedy

    Dick Van Dyke loved to perform physical comedy, even if the script didn't call for it.

    Dick Van Dyke's Knack for Physical Comedy

    Video thumbnail: Pioneers of Television George Takei on being an Asian-American

    Pioneers of Television

    George Takei on being an Asian-American

    George Takei discusses his early life in a paranoid United States.

    George Takei on being an Asian-American

    Video thumbnail: Pioneers of Television Professor Cosby

    Pioneers of Television

    Professor Cosby

    Bill Cosby's interest in education began long before "The Cosby Show."

    Professor Cosby

    Video thumbnail: Pioneers of Television Bill Cosby Revives the Sitcom

    Pioneers of Television

    Bill Cosby Revives the Sitcom

    In the Fall of 1984, Bill Cosby almost single handedly revived the sitcom genre.

    Bill Cosby Revives the Sitcom

    Video thumbnail: Pioneers of Television Margaret Cho on "All-American Girl"

    Pioneers of Television

    Margaret Cho on "All-American Girl"

    Comic Margaret Cho discusses her short-lived sitcom, "All-American Girl."

    Margaret Cho on "All-American Girl"

    Video thumbnail: Pioneers of Television Diahann Carroll on "Julia"

    Pioneers of Television

    Diahann Carroll on "Julia"

    Though “Julia” aired during the turbulent 1960s, the show abstained from racial activism.

    Diahann Carroll on "Julia"

    Video thumbnail: Pioneers of Television George Clooney and his "Powerful Pen"

    Pioneers of Television

    George Clooney and his "Powerful Pen"

    George Clooney used his popularity to speak out against discrimination.

    George Clooney and his "Powerful Pen"

    Video thumbnail: Pioneers of Television St.Elsewhere "Got it Right"

    Pioneers of Television

    St.Elsewhere "Got it Right"

    "St.Elsewhere" was the first show to portray the medical community accurately.

    St.Elsewhere "Got it Right"

    Video thumbnail: Pioneers of Television Howie Mandel on "St. Elsewhere"

    Pioneers of Television

    Howie Mandel on "St. Elsewhere"

    Howie Mandel thought he was auditioning for a sitcom.

    Howie Mandel on "St. Elsewhere"

    Video thumbnail: Pioneers of Television Noah Wyle as Dr. John Carter

    Pioneers of Television

    Noah Wyle as Dr. John Carter

    Noah Wyle discusses the character growth of Dr. John Carter.

    Noah Wyle as Dr. John Carter

    Video thumbnail: Pioneers of Television Jerry Seinfeld on "Getting Laughs"

    Pioneers of Television

    Jerry Seinfeld on "Getting Laughs"

    Jerry Seinfeld describes the challenging act of "getting a laugh."

    Jerry Seinfeld on "Getting Laughs"

    Video thumbnail: Pioneers of Television Tim Allen's Transition to TV

    Pioneers of Television

    Tim Allen's Transition to TV

    "Home Improvement" star Tim Allen wasn't planning on leaving standup for television.

    Tim Allen's Transition to TV

    Video thumbnail: Pioneers of Television Creating "Seinfeld"

    Pioneers of Television

    Creating "Seinfeld"

    Together, comics Jerry Seinfeld and Larry David created the hit sitcom "Seinfeld" in 1989.

    Creating "Seinfeld"

    Video thumbnail: Pioneers of Television Season Four Preview

    Pioneers of Television

    Season Four Preview

    More than 200 stars bring their stories to life in Season 4 of Pioneers of Television.

    Season Four Preview

    Video thumbnail: Pioneers of Television Roseanne Barr, Working Class Feminist

    Pioneers of Television

    Roseanne Barr, Working Class Feminist

    With her sitcom, Roseanne Barr made waves by fearlessly tackling difficult issues.

    Roseanne Barr, Working Class Feminist

    Video thumbnail: Pioneers of Television Tim Allen on his First "Tonight Show" Appearance

    Pioneers of Television

    Tim Allen on his First "Tonight Show" Appearance

    When sitcom star Tim Allen first appeared on Johnny Carson's "Tonight Show," he bombed.

    Tim Allen on his First "Tonight Show" Appearance

    Video thumbnail: Pioneers of Television Bob Newhart on Listening Funny

    Pioneers of Television

    Bob Newhart on Listening Funny

    Legendary comedian Bob Newhart describes his first TV role as psychologist Robert Hartley.

    Bob Newhart on Listening Funny

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