When House talks about applying the bilateral electrodes for electroshock therapy, he says, "turn it up to 11." This is a reference to the movie Spinal Tap where the character Nigel Tufnel demonstrates that his new amplifier goes to 11, which is one louder than a normal amplifier, which goes to 10.
Jason George also goes through firefighting training on "Grey's Anatomy." He ends up on the "Grey's Anatomy" spin-off as a firefighter.
House says, "But my free will? I never leave home without it." He is paraphrasing from the famous "Don't Leave Home Without It" ad campaign used by American Express from 1975 to 1987.