Why is "How I Met Your Mother" so quotable?

• Lily: Barney, I dont get it. You don't do a damn thing in any of these clips
• Barney: Exactly, because that's who corporate America wants- people who seem like bold risk takers but never actually do anything. Actually doing things gets you fired. In fact, I'm writing a book on this very phenomenon.
• Marshall: Really? You're writing a book?
• Barney: No. That would be doing some- are you even listening?!