David attempts to determine the proper technique for petting a dog, but has to turn to actress Amy Sedaris and astronaut Chris Hadfield for help in overcoming his fear of the animal.

David attempts to eavesdrop on his friends and old bosses after learning about inconspicuous listening techniques and receiving pointers from a former CIA operative.

David studies how to throw a punch and avoid being hit, and learns what happens when a punch connects. Boxing champion Bernard Hopkins is recruited to deliver David's first real blow.

David collects information from a professional cricket player, a billiards shark and two physics professors in order to learn how to properly bounce a ball.

David meets with comic Paul F Tompkins as he attempts to improve his personal signature.

David explores the science of sleep in an attempt to re-create the best nap he's ever had.