Demetri Martin Standup Comedian - 2012 TV is rated/received certificates of:
USA:TV-14
The Comedian - 2012 is rated/received certificates of: UK:15
Important Things with Demetri Martin - 2009 is rated/received certificates of: Australia:PG (some episodes) Australia:M (some episodes) Canada:14+ (TV rating)
Comedian - 2002 is rated/received certificates of: New Zealand:R16 Portugal:M/6 Singapore:NC-16 USA:R
Jimmy Carr Comedian - 2007 V is rated/received certificates of: UK:15
Jerry Seinfeld The Comedian Award - 2007 TV is rated/received certificates of: USA:TV-14
The Black Donnellys - 2007 God Is a Comedian 1-3 is rated/received certificates of: Australia:M
Stewart Lee Stand-Up Comedian - 2005 V is rated/received certificates of: UK:15
Comedian Harmonists - 1997 is rated/received certificates of: Argentina:13 Australia:M Finland:K-8 France:U Germany:6 (bw) Singapore:NC-16 Switzerland:7 (canton of Geneva) Switzerland:7 (canton of Vaud) USA:R
Most likely due to low ratings, like most of Comedy Central's shows.
Niteclub Ratings - 2012 is rated/received certificates of: USA:TV-14
The Ratings Game - 1984 TV is rated/received certificates of: Spain:T
To Be or Not to Be - 2000 is rated/received certificates of: Belgium:KT