Raimi 'too exhausted' for Spider-Man 4

Spider-Man director Sam Raimi has raised doubts over his involvement in a fourth installment of the web-slinging superhero, because he is "exhausted".

The film's stars, Tobey Maguire and Kirstin Dunst, have both recently voiced their interest in making another Spider-Man movie, but only if the show's main cast and crew are all on board.