Robert Osborne's 20th Anniversary Tribute

Comedian Kevin Hart performs in front of a crowd of 50,000 people at Philadelphia's outdoor venue, Lincoln Financial Field.

In this special live event, giants of stand-up come together to commemorate the 25th anniversary of Russell Simmons's groundbreaking "Def Comedy Jam."

Celebrating the 30 year anniversary of Michael Jackson's solo career, this legendary performance took place on September 10, 2001.

2002 HBO Stand-up Special starring Robin Williams. Recorded and broadcast live from New Your City's Broadway Theater at the culmination of his historic 2002 sold-out tour, this special finds the Oscar-winning actor/writer/comedian returning after 16 years to his stand-up roots to deliver what the Washington Post calls "...in its madcap way, a seminal cultural event."

Fresh off the heels of appearing in movies like Superhero Movie and The 40 Year-Old Virgin, fast-talking comedian Kevin Hart stars in his second live stand-up performance in Cleveland, Ohio, where he makes fun of everything and everybody - especially himself.

David Letterman vies with Jay Leno and his manager to succeed Johnny Carson, retiring from "The Tonight Show."

Legendary acting duo and married couple Richard Burton and Elizabeth Taylor prepare for a 1983 theatrical production of the play "Private Lives."

Trey Parker and Matt Stone celebrate South Park's 25th anniversary with a concert in Colorado, featuring Primus and Ween.

Jim explores multiple aspects of life including religion, marriage and his own sanity. This stand-up special was taped at Theatre Passe Muraille, Toronto, Canada, in front of a live audience.

David Blaine's signature brand of street magic mystifies the most recognisable celebrities in the world, such as Jamie Foxx, Bryan Cranston, Aaron Paul, Ricky Gervais, Katy Perry, Woody Allen, and Robert DeNiro, to name a few. He goes to the homes of Kanye West and Harrison Ford, Will Smith and Olivia Wilde. He pays a visit to Stephen Hawking at his office in Cambridge University. Blaine also travels the world, astonishing people from all walks of life with never-before seen, inconceivable magic.