Just saw this thread and for god sake leave the Canadian guy alone, he just made a mild comment about the video, the reaction is slightly over the top.
That said someone suggested that O'Brien was a poor man's James Haskell. WTF? Haskell has his merits, but I think most objective commentators would place O'Brien's dynamism, work rate, carrying as in league higher then Haskell.
Many English fans will admit the guy (Haskell) is workhorse and impressive in the gym, but there is reason Stade said Bon Voyage [sic] to him. The same club offered SOB big money to move.
It's also worth pointing out that Haskell has struggled to pin down his position for England.
Not only was he European player of the year, but he was also the by some distance according to Opta Stats the best overall player. His stats for carrying and tackles were immense, so it not a case of like Chabal where he made a few hits and a few carries and got noticed. His stats completely back him.
Jerry Collins was a great player, that said, I would place SOB carrying as ahead of him, though Jerry probably more a beast in the tackle.
SOB is the premier loose forward in Europe, as has been pointed out by just about any media commentator worth his salt. How he does in the RWC is another matter, but I for one hopes he smashes it.