(About cage fighting)
Mac: I've seen a few matches. That's a brutal sport.
Flack: It's an excuse for two grown men to legally beat the bloody pulp out of each other.
Mac: So you're not a fan?
Flack: I didn't say that.

(About the 'Rocky Horror Picture Show')
Mac: They're still showing that thing?
Jo: Apparently so.
Mac: I never saw that.
Jo: You didn't? Aw, Mac, you should. I think you'd love it. It ranks right up there with that eight-hour Reagan documentary you're always watching.

(Adam is trying to get the tie knot right)
Lindsay Monroe: Do you need a hand?
Adam Ross: No, I got it. Got it. Just got to...
Lindsay Monroe: By the time you're finished, it's gonna be the 20th anniversary.

(After creating an internet profile page for Mac)
Lindsay: There we go, hours of social networking at your fingertips!
Mac: Great. I don't want a profile page.
Jo: Oh, it doesn't matter, that's the point. Someone else can build it for you.

(After Danny performs a cards trick)
Lindsay: That's very impressive.
Danny: Thank you.
Lindsay: I think you should stick to your day job, though.

(After Danshov's car was hit by a biker on the run)
Flack: Did you get a good look at his face?
Pavel Danshov: I got a good look at my fender.
Flack: And you had nothing to do with those shots that were fired?
Pavel Danshov: A dead judge is bad for business. A crooked judge is much better.

(At John Curtis' trial)
Judge Winford: The defense request for a dismissal of all charges is denied. Unfortunately, some of the testimony we've heard here this morning is cause for concern, and raises grave questions as to the credibility of the victim.

(At the crime scene of Ron Ferguson)
Flack: Apparently, he and his partner, a guy named Phillip Roth, made a killing during the housing bubble.
Jo: Looks like the killing didn't stop there.

(Creating an internet profile page for Mac)
Jo: 'Dirty Harry'. Add that to his list of favorites.
Lindsay: (Chuckles) Really? 'Dirty Harry'? I'm not sure Mac would approve of his policing techniques.

(Soon after the Word Trade Center collapsed, Flack and Danny stumble upon each other)
Don Flack: Hey, buddy, you can't go down there.
Danny Messer: It's okay, I'm on the job.
Don Flack: What's your name?
Danny Messer: Messer. Danny Messer.
Don Flack: Listen to me, Messer. You don't need to go down...
Danny Messer: No, I got to get down there and help!
Don Flack: Listen to me, Messer. They're all gone!
Danny Messer: I want to go help these people!
Don Flack: They're all gone.

Adam: (playing an Xbox video game) Hey, Mac. Listen, why don't you pull up a chair and challenge the champ, okay? Now, look. I just want to warn you, this is not like the old-school games. Grab this. See these little buttons here? Press those. It's not like in the olden days, with the black and white screen and the little ball, or Ms. Pac-Man...

Adam: If this is Hell's Kitchen in 1970, as it moves into 1975, '80, '85 and so on, you'll see the change. Anything that turns blue has been bought up, remodeled, torn down or rebuilt. Corporate America moves in.
Mac: And the older generations, like Byrne, who were born and raised there, are driven out because they can't afford the soaring costs.

Alicia Woods: I just can't believe that he's dead. You know, he was such a special man. Everybody loved him.
Flack: Not everybody.

Christine Whitney (to Mac): Hey, I'm having a crisis of conviction in the middle of a toy store.
Mac: Okay.
Christine Whitney: My head says pick the developmentally-stimulating blocks made from organic recycled wood, but my heart says princess doll.
Mac: Well, I'm sure whatever you pick, Lucy's gonna love.
Christine Whitney: Oh, you have obviously never disappointed a 3-year-old.
Mac: I always say, go with your gut.
Christine Whitney: Oh... or we could go with ponies!
Mac: Should I send a squad car to rescue you?
Christine Whitney: Well, what is everybody else bringing?
Mac: Wait a minute. This isn't about Lucy, is it?
Christine Whitney: Of course not. This is about meeting your friends for the first time and that's a lot of pressure.
Mac: If they see in you even a fraction of what I see... you'll be a hit.
Christine Whitney: You're a sweet man, Mac Taylor. Go solve crime.

Christine Whitney: Mac Taylor, you're an idiot.
Mac: Why is that, exactly?
Christine Whitney: 'Cause I'm a catch, and you're gonna lose me.
Mac: I should have called, I know. Besides work and the fact that I'm not very good at this...
Christine Whitney: Hey, it's not about the phone call. If you're not... ready for something or, um... work's too busy or your life's complicated or you're scared, I get it (Laughs) I mean, I'm scared, too. Look, um, when your brother dies in the line of duty, the last guy you want to date is a cop. But I'm here and... we kissed, and I guess I just want to know if it felt right to you, too.
Mac: It did.
Christine Whitney: (Laughs) Good.
Mac: So, how about I make it up to you. We'll go out to dinner tonight. I know this amazing restaurant with this incredible chef.
Christine Whitney: Well, why don't you just come by the... (Laughs) Oh! Cute. You mean me.