Jennifer Morrison has no dialog.
With this episode, the three new team members' actors are listed as "Also Starring" in the post-opening credits, before the guest stars.
Kutner: He lies.
Dr. House: My ears are burning.
Dr. Foreman: Tell ‘em you’re done firing people.
Dr. House: Well, if I lie, that would be little reassurance.
Thirteen: She’s not a liar.
Dr. House: Okay, this is gonna be a tough case. I have almost no knowledge of alien physiology.
Dr. Hadley: Everyone lies, but there’s an exception to every rule.
Dr. House: Actually, there isn’t. That’s kinda what makes it a rule.
Dr. House: On the other hand, you are now a team, you’ve gotta work together. the simple fact is giving people crap makes people like people. So spend 25 bucks, learn to love.
Kutner: Who's that from?
Dr. House: Santa, obviously, because you know I worship him. No, wait, I mean Satan. I always get them confused.
Dr. Foreman: Did you buy House a present?
Dr. Chase: Why would I?
Dr. Foreman: To screw with me.
Dr. Chase: Then I'm gonna say yes.
Dr. Wilson: The angels of Christmas have finally given House a present he can appreciate.
Dr. House: Oh don’t ruin it, don’t pin this on Christ, he’s got enough nails in him.
Dr. House: How do you spell "homey"? I don't wanna be offensive.