Actor Charlie Sheen is to star in US sitcom Two and a Half Men for another two seasons, it has been announced.

BBC: Two And A Half Men

Network shows have to appeal to a broad audience which prefers the easy humor of Two and a Half Men to the quirkiness of 30 Rock.

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Kutcher's role as Apple mastermind Jobs, who died last year, marks a departure from his recent comedy film roles and the sitcom Two and a Half Men, which Sundance director John Cooper says is typical of the festival.

BBC: Ashton Kutcher as Steve Jobs