Middle lane madness

What is it about the middle lane on motorways? I was on the south coast this weekend and came back much of the time on virtually empty motorways. It should have been a simple journey but I stopped counting the number of times I had to come from the inside lane out to the third lane and then back again to overtake some moron stuggling to breathe and steer at the same time, trundling along in the middle lane on an otherwise deserted stretch of road.

Then there were the loonies who drive inches from your bumper, flashing headlights as if somehow they have some divine rights of passage, when you are in the outside lane at the rear of a long line of vehicles overtaking a clutch of slow moving traffic. When you finally pull in they surge forward almost taking your rear wing off and flash the next car in the line bullying their way to clear road.

Any obnoxious driving habits that get your teeth gnashing?