When Michael talked about being locked up:

"The worst thing about prison was the Dementors."

NBC / Via his-name-is-dr-crentist.tumblr.com

When Dwight described the best way to spend Valentine's Day:

"My perfect Valentine's Day? I'm at home, three cell phones in front of me, fielding desperate calls from people who want to buy one of the 50 restaurant reservations I made over 6 months ago."

NBC / Via kiblawi2000.tumblr.com

When Creed tried to get Jim to go out with his daughter:

Creed: "So, hey, I want to set you up with my daughter."
Jim: "Oh, I'm engaged to Pam."
Creed: "I thought you were gay."
Jim: "Then why would you want to set me up with your daughter?"

NBC / Via rooncymara.tumblr.com