There are so many fine lines but here are just a few...

Joe:  "I'm a hero, I only fight on the side of the angels."
The Cost of a Vacation

Joe:  "that's a long time between huevos rancheros..."
Joe saying goodbye to Amanda Hewitt in Round Trip to Nowhere

Joe:  "Sharon, you're more than a Sunday night girl"
Babe in the Woods

Joe:  "Is that a new dress?"
Joe's way of letting Peggy know he has his sight back in The Sound of Darkness

Joe:  "Stop worrying Peggy, I've got 50lbs on her."
Catspaw 

Cop to Joe: "What are you doing in here?"
Joe: "Regaining consciousness."
The Cost of a Vacation

Joe:  "Quint's got my secretary...I like her very much... you...
I don't like at all, not the least bit"
A Word Called Courage

Joe:  "There's nothing like jogging past a firing squad to keep a man healthy"
All Around the Money Tree

Joe: "Yeah, I know, cuz you're bigger than both of me."
Then Drink Takes the Man

"I'd hate to spoil a beautiful man like you with a bullet."
All Around the Money Tree

Joe: "I'm Mannix. Let me in or I'll scream."
The Odds Against Donald Jordan

Joe:  "I'm such a loveable guy, I figure someone has to
have a reason to want to kill me."
Only One Death to a Customer

Joe: "Oh, I'm sorry Claire. But what can I do?
You took away my license to practice in this state."
After the bad girl makes sexy overtures to him.
Only Giants Can Play

Joe: "If you're not gonna pull that trigger immediately,
mind if I have a cigarette?"
To the Swiftest Death

Joe:"One thing about us cliff-jumpers, Peggy--
We like to take the Big Dive alone!"
A View Of Nowhere

Joe (to evil sheriff): "I've discovered something about small towns--
some are small because of their size, some because of the people."
A Way toDusty Death

Claire: "If I have to, I can take off my gloves and fight like a man."
Joe: "There you go...scaring me again!"
Only Giants Can Play

Joe: "Now don't go quoting some half-baked philosopher"
Peggy: "Joe...I was quoting you."
Murder Revisited

Joe: "Mr. Bannerman, I only charge for my professional services.
A little item like my life...that's the personal file!"
Deja Vu

Joe: "Sooner or later, all my friends wanna kill me."
Figures in a Landscape

Lt. Burdette: "Now who's out there trying to blow your head off, Mannix?
Not that I don't think it's a pretty good idea."
Medal for a Hero

Reva: "You really have no feelings, have you?"
Joe: "Well, there's a difference between using love, and enjoying it."
A Question of Midnight

Diana: "Were you in love with any of them?"
Joe: "I thought so, once or twice."
Diana: "What happened?"
Joe:" I stopped thinking so, once or twice."
The Solid Gold Web