Ali G is back. But is the character past its sell-by date?

• Sacha Baron Cohen has brought back Ali G, more than two decades after the release of Ali G Indahouse in 2002. • Earlier this month more than 300 fans joined an official Ali G lookalike competition in London, touring landmarks including Big Ben, Leicester Square and Covent Garden on an open-top bus while wearing the character's trademark yellow shell suit. • The stunt promotes an upcoming sequel to the original film.