1. Choice Hotels

Steve Joyce hits the frontlines of his own company, which includes such popular hotel franchises as Comfort Inn, Econo Lodge, Quality and Cambria Suites, and receives an exhausting, up-close look at the industry.

2. Great Wolf Resorts

Kim Schaefer, CEO of Great Wolf Resorts, North America's largest family of indoor waterpark resorts, struggles to keep pace working in an aquatic center and gets her hands dirty when she responds to a call no waterpark employee wants to receive.

3. DirecTV

Mike White, Chairman, President and CEO of DIRECTV, the world's most popular video service goes undercover in his own company where he discovers that employees are spending their own money for a specific piece of equipment.

4. Frontier Airlines

Bryan Bedford, Chairman of the Board, President and CEO of Frontier Airlines, goes undercover in his own company, where he "gets christened" while emptying a plane's lavatory and discovers how company-wide pay cuts are impacting his employees.

5. NASCAR

Steve Phelps, SVP and Chief Marketing Officer for NASCAR, the #1 spectator sport in the U.S., goes undercover with one of the sport's pit crews and also struggles to keep pace working alongside a grounds crew preparing for the "Daytona 500."

6. Chiquita

Fernando Aguirre, Chairman and CEO of Chiquita, one of the largest producers of fruits and vegetables in the world, is unable to perform a physically demanding job at their flagship factory and has to be removed from the line.

7. Chicago Cubs

Todd Ricketts, one of the owners of the Chicago Cubs, goes undercover within one of baseball's most famous franchises and fights for the chance to redeem himself after being let go on the second day.

8. Lucky Strike Lanes

Steven Foster, Co-Founder and CEO of Lucky Strike Lanes, one of the nation's largest chains of upscale bowling alleys, takes an emotional trip inside his own company where among other things, he hits the streets as a walking bowling pin.

9. Subway

Don Fertman, the Chief Development Officer for SUBWAY restaurants, one of the world's largest food franchises, goes undercover where he learns endless sandwich combinations while being trained by one of the toughest, no-nonsense employees ever

10. ABM

Henrik Slipsager, President and CEO of ABM Industries, one of the nation's largest facilities services contractors, offering janitorial, engineering, parking and security services for thousands of clients, takes a journey within his own corporation.

11. Johnny Rockets

John Fuller, President and CEO of Johnny Rockets, one of the nation's largest chains of retro-themed restaurants, goes undercover to work in a restaurant for the first time in his career.

12. Norwegian Cruise Line

Kevin Sheehan, President and CEO of Norwegian Cruise Line, finds himself in uncharted territory when he's asked to lead nearly 1,000 party-goers in a line dance, and is later forced to reveal his true identity after being recognized by an employee.

13. UniFirst

Ronald Croatti, President and CEO of UniFirst, one of the nation's largest producers of workwear and uniforms, dons a "hippie" look during his undercover mission, where he finds himself struggling to keep pace with the fast-moving assembly line.

14. Belfor

Sheldon Yellen, the CEO of BELFOR, the world's largest disaster restoration company, goes undercover and becomes frustrated while struggling to hang drywall. Also, the boss unexpectedly reveals himself while working alongside an employee.

15. Mack Trucks

When Mack Trucks CEO Denny Slagle goes under cover, he accidentally brings the plant's assembly line to a halt and discovers a rumor about the company.

16. City of Cincinnati

17. United Van Lines

18. MGM Grand

Scott Sibella, the President and COO of the MGM Grand in Las Vegas, goes undercover in his company.

19. Synagro

Bill Massa, the President and CEO of Synagro, goes undercover in his company.

20. Baja Fresh

21. BrightStar

22. University of California, Riverside

University of California, Riverside Chancellor Tim White goes under cover as a teaching assistant for 200 organic chemistry students, and works with the track team.