The Big Bang Theory2007

[first lines]

Raj Koothrappali:
Here's what I wonder about zombies: [the others groan] What happens if they can't get any human flesh to eat? They can't starve to death, they're already dead.

Howard Wolowitz:
You take this one. I spent an hour last night on "How do vampires shave when they can't see themselves in the mirror?"

Sheldon Cooper:
Well-groomed vampires meet in pairs and shave each other. Case closed.

Raj Koothrappali:
Yeah, okay. So, zombies.

Leonard Hofstadter:
Uh, I guess it depends on the zombies, Raj. Are we talking slow zombies, fast zombies? Like in '28 Days', if those zombies didn't eat the starved.

Howard Wolowitz:
Yes, you're thinking of '28 Days Later'. '28 Days' is where Sandra Bullock goes to rehab and puts the audience into an undead state.