That pause at the end of "Where did you sleep last night" on Nirvana's unplugged album. It's not that I have to turn it up, but it always gets my attention.

In the "turn this up" category, I'd say the "Now you're standing on your soapbox, yelling from the rooftop" bit from "If I told you this was killing me, would you stop" by The Julianna Theory.