Two brothers from Jersey brush up on their German and French History, a group of friends shake things up with a video bonus they'll never forget and two roommates are schooled on their heavy metal knowledge.

Four sibling impress Ben with their smarts, the Cash Cab has a run in with the New York City Police Department, and four girlfriends shriek their way through a nail biter of a game.

Coworkers learn the hard way that not even Siri can help them, a mother and Son try their luck as their Cash Cab doomsday clock runs down, and two sisters from the Midwest try to make it rain green despite exclaiming to Ben, "We're not that smart!"

It's Shark Week in the Cash Cab! See what happens when Ben tests the nautical knowledge of a group of Sailors, Best Friends and a family of three as they try their luck in the Cash Cab.

It's a bright day in the Cash Cab when two Rutgers University IT specialists are surprised by Murray Goldberg himself, Jeff Garlin. Then, comedian and star of Curb Your Enthusiasm, Susie Essman make the day of two players.

Three friends freak out when none other than Gilbert Gottfried joins their team. Then, if the cab wasn't loud or funny enough- Comedian Dave Foley surprises a Mom and Dad to be and lends a hand in the game.

Four bartenders take a shot at their luck in the cab and see if they can make it all the way to work with no strikes. Then, a couple's ride is interrupted when none other than Matthew Perry jumps in wanting to share a ride.