Portal:The Big Bang Theory/Selected article/1
"The Hawking Excitation" is the 21st episode of the fifth season of The Big Bang Theory. It aired on April 5, 2012 and features a guest appearance by scientist Stephen Hawking (pictured). The episode received mostly positive reviews.
Hawking had been asked to appear on the show previously, but was too ill to appear. He says he is a big fan of The Big Bang Theory and watched a rehearsal of the episode after his scene was filmed.
In the episode, Howard is hired to maintain Hawking's wheelchair and Sheldon is desperate to meet him. Sheldon is forced to complete various humiliating tasks for Howard, before finally meeting his hero.