Real friggin' N-move by Hamilton in Turn 1 !!
If Rosberg is just an average driver, as many contend, why is Hamilton so afraid of him to take him out in that fashion ??
If Rosberg had made the move, Bernie would likely have banned him from the sport.
I can't remember the specifics right now, but Rosberg has made such moves and gotten away with it in the past two years. I do however agree that the move on Rosberg was borderline, SKY F1's Martin Brundle said that Lewis didn't turn as much as he could have when he viewed the onboard footage and I agree, Hamilton was lucky to not get penalized.
Hamilton may have won the Championship... But he's NO Champion !!
Quite a few drivers over the years have used dubious methods to win titles, Prost in 1989, deliberately driving into Senna to stop him from passing, while in 1990, Senna returned the favor, by driving into Prost on lap 1 and again in 1994, Schumacher, hitting the wall before keeping his foot in to take out title rival Hill who would have denied Schumacher his first title. By your reckoning, Prost, Senna and Schumacher were no champions either.
If you look at his 1st year w/ Mercedes, he consistently out-qualified and out-performed Michael Schumacher... journeyman right... 
Schumacher was in the twilight of his career, well past his best as a driver, the person that drove the Mercedes was not the driver who won all those drivers titles with Ferrari and Renault. I'm afraid Rosberg's stats against Hamilton don't lie, I don't doubt that Rosberg is a very good driver, but he is far from the best on the current grid. In the three years Hamilton and Rosberg have been team mates, Hamilton has scored 22 wins to Rosberg's 9, as I said, stats don't lie.