Ali G (born Alistair Leslie Graham) is a satirical fictional character invented and performed by British comedian Sacha Baron Cohen. Originally appearing on Channel 4's Eleven O'Clock show, Ali G is the title character of Channel 4's Da Ali G Show, original episodes of which aired on HBO in 2003–2004, and is the title character of the film Ali G Indahouse.Sacha Baron Cohen's character Ali G, alongside his Borat and Brüno characters, has been retired. Borat and Ali G are dead for Sacha Baron Cohen Yahoo, 21 December 2007
Development of the character
The character of Ali G plays on the stereotype of a non-black suburban male who revels in a mixture of American Gangsta Rap and Jamaican Black culture, particularly through hip hop, reggae, and jungle music; though the actual ethnicity of Ali G's character caused confusion, with some believing him to be a British Asian. Is it cos I is black?, The Guardian, 12 January 2000. However, Baron Cohen stated that BBC Radio 1 DJ Tim Westwood
Source:
http://en.wikipedia.org/wiki/Ali G - Sacha Baron Cohen