I think it depends on the area you are driving too. Where I live... and usually drive... I don't see too much of this behaviour. Sure it'll happen, but I just ignore it and laugh at the stupidity.
Over the past 5 weeks, however, I've been house sitting for a friend in a totally different area. Now, with the change in where I drive, I've seen a lot more of this. The other day, driving back from work, I had three different people swerving through traffic behind me to catch up, just to get next to me and do the whole 'reving and bouncing forward thing'. When they got no reaction, they just floored it. That was three in half an hour.
Doesn't really bother me though. If they feel they have something to prove, let them do it. At the end of the day, they are the ones who look like d!cks, not you.