Carlos: I know, you want to ask me out. All the foxy ladies love my accent. It drives them crazy.
Carlos: Just so you know, I'm not into the whole pain is pleasure thing.
There's also Jill's reaction to it, where she tells him to keep dreaming.
Jill slapping sense into Carlos in one version of their clock tower scene.
There's something darkly hilarious about Dario Rosso (the guy in the warehouse who lost his daughter) claiming he'd rather starve to death in a shipping container than let the zombies get him...then stopping by the warehouse later and seeing that he let the zombies get him anyway.
There is a no smoking sign in the Grill 13 kitchen with the word no crossed out.