Stars sign confidentiality agreements for Stallone's show

Mel Gibson, William Shatner and James Caan are among a host of stars who have had to sign confidentiality agreements after viewing tapings of Sylvester Stallone's new boxing reality show.

The Contender, in which 16 fighters compete for a $1m (€825,700) prize with mentoring from Stallone and boxing legend Sugar Ray Leonard, is due to debut in November.

And those who attended the first three segments of the 15-episode show in a 300-seat arena in Los Angeles - including Mr T, Elliot Gould and Tony Danza - have had to sign agreements not to disclose the outcome of any of the bouts.

Bosses of the NBC show are currently locked in a bitter battle with rival Fox show The Next Great Champ to block its September debut.