"KISS... Keep It Simple, Stupid" -michael

"That's what she said!"

Ok, so maybe this is a 2-liner?

Todd Packer: What has two thumbs and likes to bone your mom? This guy!!!

"and then suddenly she's not your ho no mo"

not REALLY a one liner but...
"Certain events have transpired and I've thought about certain things. And I'm sorry for the way those certain events transpired. And I would would just like to make some changes about certain things and certain situationions with certain accountants."

I LOL every time....

you can't fire me, I don't work in this van- Dwight

or

just try not to be too gay on the court -Michael

"Don't be an idiot. It changed my life."
Dwight K. Schrute.

sorry, two lines:)

"I hate so much about the things you choose to be." -Michael

Random trivia - I watched an interview recently where John Krasinski said his favorite moment is when Creed goes, "Which one is Pam?"

"I’m not offended by homosexuality. In the 60s I made love to many, many women – often outdoors in the mud and the rain – and it’s possible that a man slipped in. There’d be no way of knowing..."-Creed

"I once kept a spud gun in my bag at work for almost an entire day. Can you imagine if I were deranged?

Uh, no, I only give my organs to my real friends.

I"m always thinking one step ahead...like a carpenter...who builds stairs."
-Andy

"Actually, I didn't think it was appropriate to invite children since it's, uh, you know...there's gambling and alcohol...and it's in our dangerous warehouse...it's a school night, and you know, uh... Hooters is catering. You know, is that not—is that enough? Should I keep going?"
-toby

False. I do not miss him.

Please don't smell me, Michael - Jan

I.DECLARE.BANKRUPTCY!

I'm proposing today. Holy Crap.- Jim

"Now I know how Bob Hope felt when he performed in Saudi Arabia." -- Michael Scott, 'The Dundies'

its not a one liner but hey THATS WHAT SHE SAID

Sorry I annoyed you with my friendship!

-Andy

I want Michael to have all the urine he needs

-Dwight

Everybody poops.

-Mose Schrute

I always imagined less manure. I mean, some manure - just... less.

-Jim

The fire is shooting at us!

-Andy

It's pony

-Dwight