Leonard Hofstadter: Sheldon, your food's getting cold.Sheldon Cooper: I'll eat later. Right now I'm suckling at the informative bosom of Mother Physics.Penny: Hot when Sheldon talks dirty.
Sheldon Cooper: Now I'd like to welcome a very special guest. He put the Reading in your Rainbow, the Geordi in your La Forge, and the Kunta in your Kinte. Please welcome Mr. LeVar Burton.LeVar Burton: Thank you, Sheldon. Now, you remember our deal.Sheldon Cooper: You do this and I erase all your contact information.LeVar Burton: While...Sheldon Cooper: While you watch me do it.
Penny: Here, what's going on?Leonard Hofstadter: It's a little hard to explain. He does this thing where he pretends he's in an alternate dimension that occupies the same physical space we're in, but he can't perceive us.Sheldon Cooper: Don't flatter yourself; I'm just ignoring you.
Howard Wolowitz: Ma, ma, calm dow- listen to me! I know it says click with the mouse, but on a laptop the trackpad is the mouse. Now put your finger on it.Howard Wolowitz: Doesn't matter which finger.Howard Wolowitz: Good choice. Now move it down to your e-mail icon.Howard Wolowitz: The little envelope.Howard Wolowitz: What do you mean what does it look like? It looks like an envelope!Howard Wolowitz: Fine, you don't like the computer, don't use it!Howard Wolowitz: Sure. We can exchange it for a salad spinner. Good-bye.Raj Koothrappali: That's a Hanukkah present you're regretting, huh?Sheldon Cooper: I won't say that all senior citizens who can't master technology should be publicly flogged. But, if we made an example of one or two it might give the others incentive to try harder.