The shirtless Jimmy Johnson . . .

 . . . and oh yeah, the "Survivor: Nicaragua" meet-the-cast video.

As Survivor turns 21 this season, it features an old vs. young angle with a bunch of hot-bodied youngsters flashing skin and skin and survivals skills and skin. On the opposite side are the older folks, flashing nearly as much skin, just a bit less, um, taught.

Enjoy the sneak peek and say hello to former Dallas Cowboys coach Jimmy Johnson toward the end of the video. He's one of the dudes without a shirt on, but the only one on the show who won Super Bowl rings.

"Survivor: Nicaragua" premieres Wednesday, Sept. 15 on CBS.