21 - 2008 was released on:
USA: 7 March 2008 (South by Southwest Film Festival)
USA: 12 March 2008 (ShoWest)
USA: 28 March 2008
Germany: 10 April 2008
Greece: 10 April 2008
Iceland: 11 April 2008
Ireland: 11 April 2008
Spain: 11 April 2008
Sweden: 11 April 2008
UK: 11 April 2008
Belgium: 16 April 2008
Egypt: 16 April 2008
Argentina: 17 April 2008
Israel: 17 April 2008
Russia: 17 April 2008
Brazil: 18 April 2008
Estonia: 18 April 2008
Italy: 18 April 2008
Kuwait: 24 April 2008
Venezuela: 25 April 2008
Hungary: 1 May 2008
Portugal: 1 May 2008
Serbia: 1 May 2008
Bulgaria: 9 May 2008
Australia: 15 May 2008
Taiwan: 16 May 2008
Uruguay: 16 May 2008
Philippines: 28 May 2008
Ukraine: 29 May 2008
Austria: 30 May 2008
Japan: 31 May 2008
France: 4 June 2008
Switzerland: 4 June 2008 (French speaking region)
Switzerland: 5 June 2008 (German speaking region)
Colombia: 6 June 2008
India: 6 June 2008
Poland: 6 June 2008
Turkey: 6 June 2008
Indonesia: 12 June 2008
Hong Kong: 19 June 2008
South Korea: 19 June 2008
Denmark: 20 June 2008
Finland: 20 June 2008
Mexico: 20 June 2008
Norway: 20 June 2008
Netherlands: 26 June 2008
Singapore: 26 June 2008
The Principal's Office - 2008 2008-08-21 was released on: USA: 21 August 2008
Catch 21 - 2008 1-1 was released on: USA: 21 July 2008
Speeders - 2007 2008-08-21 was released on: USA: 21 August 2008
The Hour - 2005 2008-10-21 was released on: USA: 21 October 2008
Punk'd - 2003 2008-11-21 was released on: USA: 21 November 2008
The View - 1997 2008-01-21 was released on: USA: 21 January 2008
The View - 1997 2008-02-21 was released on: USA: 21 February 2008
The View - 1997 2008-03-21 was released on: USA: 21 March 2008
The View - 1997 2008-04-21 was released on: USA: 21 April 2008
The View - 1997 2008-05-21 was released on: USA: 21 May 2008
The View - 1997 2008-11-21 was released on: USA: 21 November 2008
Martha - 2005 2008-01-21 was released on: USA: 21 January 2008