Pro Athlete/Model Gabrielle Reece teaches the girls the art of action modeling, the models get even more physical for a competition where the winner has to act fast to claim her prize, and then the girls fly during a daring photo shoot at a skydiving training facility.

When the skeletal remains of a federal prosecutor who disappeared five years earlier are found in the desert outside Las Vegas, the team suspects it to be tied to the mob. Booth and Brennan go undercover as Vegas high-rollers in an attempt to uncover the mystery, Booth risks his life.

The BAU travels to Seattle to identify and catch a serial bomber who has been terrorizing the city and targeting centers of automated techology. Working with the author of a science fiction novel that has become a guide for the bomber, the team attempts to determine why certain sites have been chosen as targets.

Outgoing Defense Secretary "Donald Rumsfeld" (Gerard) fields questions from the audience; Jamie Oliver makes sausage carbonara; the Metropolitan Opera performs a selection from the upcoming production of "Il Barbiere di Siviglia."

In "Concrete Glider," Adam and Jamie test the old engineering challenge that like a lead balloon, you can't make a concrete glider fly. There's nothing like a challenge to focus the MythBusters' massive minds! Who will fly into history as champ and who will plummet like a stone? Tune in to find out. In the meantime, Kari, Grant and Tori go to amazing lengths to find out just how dangerous it is to stand too close to the edge of a train platform.

Last week, in an attempt to make his wait for the Wii instantaneous, Cartman froze himself. Through a bizarre twist of fate, he wakes up 500 years in the future, where there are warring factions, some angry sea otters, and worst of all: No Nintendo Wii! Will Cartman get out of this crazy future? Or will he be doomed to never get his hands on the Wii?

They remaining players at the ranch are shocked when Caroline Rhea informs them that some of the 36 players sent home at the beginning will be rejoining them. Two players will be joining the competition at the ranch, and will have to struggle to adapt to Bob and Kim's training.

Tonight Stephen welcomes CNN anchor Jeff Greenfield.

Attention to detail will be rated during this round. The chefs are asked to create a tidbit from not so tidbit-y choices, and then must serve a meal to kids at a fitness camp. Guest Judge: Suzanne Goin QuickFire Challenge: Create an Amuse-Bouche. Elimination Challenge: Create a Meal That Does not Exceed 500 Calories.