If you can pull over, by all means do so and let the guy move along. The one that gets me riled is when you're in the left lane, passing a long line of slower traffic in the right, going above the speed limit, cars in front of you in the left lane passing above-mentioned cars in the right lane, and some jerk rides your bumper. Where does this idiot think he's gonna go? You're bottled in as much as he is.
The hard break check thing is stupid, for the reasons mentioned, but if the traffic in front of you comes to a screeching halt, that tailgater may very well take you out.
All the above being said, I'll repeat what I've stated before on here. The US should be more like part of Europe in that the left lane should be a passing lane. People who camp in the left lane going below the speed limit should get a ticket.