Vex (arguing with Delvin over the value of a recent 'job'): "You idiot. He said firs not furs. It was a damn logging caravan."
Recently I overheard a Forsworn (while working over a Nord corpse on a table) saying something along the lines of: "Nord skulls make good axes. About all they're good for."

I love the way they pause: "but...I was...sick that day." I think that's where the pauses are - haven't heard it in a while because on the character I've been playing lately the Penitus Oculatus cleared it out for me. 
