On 'Late Show With David Letterman' (weeknights, 11:35PM ET on CBS) the cast of 'Survivor: Heroes vs. Villains' (Thurs., 8PM ET on CBS) did the 'Top Ten List.'

The number one thing we didn't know about 'Survivor'? "Several contestants later posed for 'Playboy' – and I'm one of them," said a tie-dye-shirted Rupert.

Good to know. That's one 'Playboy' we won't be picking up. We'd sooner eat a scorpion and be voted off the island!

Watch the video after the jump.On 'Late Show With David Letterman' (weeknights, 11:35PM ET on CBS) the cast of 'Survivor: Heroes vs. Villains' (Thurs., 8PM ET on CBS) did the 'Top Ten List.' The number one thing we didn't know about 'Survivor'? "Several contestants later posed for 'Playboy' – and I'm one of them," said a tie-dye-shirted Rupert. Good to know. That's one 'Playboy' we won't be picking up. We'd sooner eat a scorpion and be voted off the island!