The Proton Regeneration

Overview

Sheldon goes head-to-head with Wil Wheaton for the role of the new Professor Proton. Also, Penny steps in to take care of Halley when Bernadette and Howard both wind up on bed rest.

Guest Stars

Wil Wheaton

Wil Wheaton

Pamela Adlon

Halley Wolowitz (voice)

Bob Newhart

Arthur Jeffries

Cat Hammons

Nurse

Joey Rich

Man