The nominated houseguests compete for the Power of Veto; another clue is shown for Coup d' Etat.

After a lab accident, Global Dynamics researcher Carl Carlson is expelled from Eureka due to lack of results. Later, it is discovered that the accident has unlocked hidden abilities in Carl. Meanwhile, Jack does his best to avoid a physical.

Mike Rowe first joins a crew at a rock quarry in the state of Washington and learns what it takes to make gravel from loading rocks to blowing up a side of a mountain.



Next, Mike gets hip deep in mud and muck working with the hippo keepers at the Adventure Aquarium in Camden, NJ.



Finally, Mike helps a crew of hooftrimmers give some cows a pedicure and later cleans a cow foot bath.

John Sr. ends up disappearing after arguing with Tommy about their living conditions. Tommy is none too thrilled with Lou's latest love interest, while Jerry's new woman might prove to be dangerous for him. Also, Sean and Maggie meet with the priest to discuss their upcoming wedding.

The roommates attend Fantasy Fest, which was postponed because of Hurricane Wilma, and participate in costume contests. But John encounters trouble with the gang's parade float.

TONIGHT: The star of the movie Snakes on a Plane, Samuel L. Jackson.

Tonight Stephen welcomes political commentator of PBS's NewsHour with Jim Lehrer and author of Eyewitness to Power: The Essence of Leadership Nixon to Clinton, David Gergen.