The Big Bang Theory (TV Series)

The Lunar Excitation (2010)

Brian Thomas Smith: Zack Johnson

Photos 

Quotes 

• Zack : Is that the laser? Bitchin'.

  Sheldon Cooper : Yes, in 1917 when Albert Einstein established the theoretic foundation for the laser in his paper "Zur Quantentheorie der Strahlung," his fondest hope was that the resultant device be bitchin'.

  Zack : Well, mission accomplished.

• Zack : One question. How can you be sure it won't blow up?

  Leonard Hofstadter : The laser?

  Zack : The moon!

  Sheldon Cooper : See, now this is a man for Penny.

  Leonard Hofstadter : That's a great question, Zack!

  Sheldon Cooper : No, it's not!

  Penny : Sheldon, play nice.

  Sheldon Cooper : Well, it's not a great question! How could someone possibly think we're going to blow up the moon? That's a great question.

  Leonard Hofstadter : [to Zack]  Don't worry about the moon. We... , we set our laser to stun.

• Zack : That's your big experiment? All that for a line on a screen?

  Leonard Hofstadter : Yeah, but, uh, think about what this represents. The fact that we can do this is the only way of definitively proving that there are man-made objects on the moon, put there by a member of a species that only 60 years before had just invented the airplane.

  Zack : What species is that?

  Sheldon Cooper : I was wrong. Penny can do better.

• Leonard Hofstadter : Now, we'll be able to see the beam when it leaves, but it won't be strong enough when it comes back to be seen with the naked eye.

  Zack Johnson : [looking at Penny]  Naked.

  [laughs]