Season 8 - Episode Guide

Actors Kristen Bell and Dax Shepard face off in a series of Battle of the Sexes games designed to illustrate the differences between female and male brains.

Actor Ted Danson and special guests Blue Man Group play along with host Keegan-Michael Key as we learn how our brains distinguish fact from fiction.

NFL football player Drew Brees puts his brain to the test with a series of mental challenges exploring how humans have hacked their brains; Keegan and Drew play a game called Draft Day, which shows how the brain must react quickly and be flexible.

New Orleans Saints NFL quarterback Drew Brees puts his brain to the test with a series of mental challenges exploring how we can train our own minds to do as we want.

Actor-musician Jack Black and his Tenacious D bandmate Kyle Gass learn how music affects the brain.

Keegan-Michael Key welcomes billionaire CEO and reality star Mark Cuban ("Shark Tank") to the show.

Actress Rebel Wilson joins Keegan-Michael Key to explore the power of the subconscious when it comes to falling in love.

Actress Tiffany Haddish and director Jordan Peele join Keegan-Michael Key to play a series of games.