Mac: 'When the towers fell, and Claire died, that was the clearest definition of everything that is unfair and unjust in this world. And I was powerless to stop it. All those innocent lives...' From 'The Closer.' I love this quote because it's such a great Mac-Moment and GS does it so well. Also, I really think it gives insight into how losing Claire on 9-11 has affected Mac and how it drives him in his work.
Danny: 'I know a thing or two about going to bat for your brother' - nice Danny moment from hung out to Dry, good character stuff. And from Raising Shane - 'That son of a b*tch is back'
I also like the Mac-quote from the end of Manhattan Manhunt and the 'gooey' Stella/Mac quotes that DandMfan mentioned.
Mac: 'Don't call me sir' From Zoo York.
Peyton: 'Thank you for dinner. You're an exceptional cook, Detective.'
Mac: 'Well, I told you I make a mean cheeseburger.' From PWM. Love how she calls him 'Detective' and how he made her a cheeseburger for their romantic meal.
Stella: 'Boy, you sure know how to treat a girl' - from 'Recycling' when Mac takes her to a 'sit down dinner'...at a dog show!
Mac: 'You shot a New York City police officer. He wasn't just a cop. He was somebody's son. He made somebody proud at home. When you shot him in the back, you shot those people through the heart. From where I stand, it's you who should be put to death. No trial, no jury. Eye for an eye.' From the end of Officer Blue. Pissy!Mac at his best.
Stella: 'In Stella-Talk, it's time to take the bullet out of the horse, Mac.' Rambo!Stella, yay! And the look on Mac's face is priceless.
Aiden: 'Do me a favor. Don't check out my ass when a kid's in the street. Show some respect.' To Det. Thacker in Officer Blue. Just love how she puts him in his place and knows he was looking at her ass.
This Pissy!Mac quote from Tanglewood -
'I'm a marine, you little punk. I've put men in the ground in foreign soil so you can sleep at night. But you wouldn't know anything about that, would you, kid?'
And this Danny quote from Grand Master when he and Stella go to the naked sushi restaurant:
'Who cares if it's sanitary? I wanna see the menu.'