The Caller: If you have to ask, you're not ready to know yet.
The Caller: Wait till it goes national. ABC, CBS, CNN, UPN, you're gonna have the whole alphabet.
The Caller: Deception can't go unrewarded.
Big Q: Voodoo on you-do, motherfucker, from Big Q to Big Stu.
The Caller: This is exciting. You get to choose between them. Kelly. Pam. BAM BAM.
The Caller: This guy is getting on my nerves.
Stu: You shoot the guy, and I'm responsible?
The Caller: It looked that way from up here.
Stu: I don't know what I did to you, but whatever it was I'm glad. Alright, I wish it had been worse, I wish you had fucking died.
The Caller: Yes! Finally some honesty.
The Caller: It's not in your best interest to disconnect me.
Stu: So you're an actor?
The Caller: Yes, one of your pathetic failed ones. You don't have to come find me and ruin me, I can't get work as it is. I've done some off-Broadway, some off-Manhattan, but that dried up. Now I wait tables, clean toilets, anything I can to make the rent. I'm a walking cliché.
Felicia: You better get out of there before he come back and kick yo' ass.
The Caller: Come on Stu. You're a selfish guy. Just pick one of them and save yourself.
Capt. Ramey: And Jonah, don't look up.
The Caller: At least now you'll die with a clean conscience.
Stu: No, you're the one who's gonna fucking die.
Capt. Ramey: Who's your lawyer?
Kelly Shepard: We don't have a lawyer.
Capt. Ramey: He specifically asked that his attorney be brought down here to negotiate his surrender.
Kelly Shepard: Well, we never needed one.
Capt. Ramey: Well, you need a good one now.
Stu: Where? Where are you?
The Caller: There are hundred of windows out there. Why don't you check them out?
The Caller: Stu, if you hang up, I will kill you.
The Caller: Come on, Stu! Don't you get the game yet?
Stu: Don't you dare fucking hurt her.
The Caller: Don't I dare?
Stu: The first step to being noticed is being mentioned.
The Caller: Stand up and be a man.
Answer: The pizza man is intended by the Caller to be a decoy so he can get away. The Caller sends the pizza man to the phone booth so that Stu will identify him later in the apartment, giving the police a convenient answer to the mystery while the real Caller escapes. In fact, at the end of the movie, the Caller comes to visit Stu - obviously he's not the dead pizza delivery man.
Phoenix