In what is easily the most awesome scene of the entire movie, Plunkett rescues Macleane from the gallows in a moment that defines Big Damn Heroes. You know that Craig Armstrong "Escape" score that gets used a lot in movie trailers? This is the scene it came from.
Less impressive, but Rebecca gets one with her entirely deadpan, "Mr Chance, I believe you have halitosis."
"Only when I laugh." is not only awesome, but makes me laugh as well.