This was a major news item on Reporting Scotland this evening. The footage was filmed at RAF Lossiemouth. The guy who did the break dancing has raised thousands for cancer charities, apparently. He has been interviewed for CBS and other news channels all over the world, following the YouTube release.
I was told that it was on the NATO exercise in belgium as WoREoD mentioned...
Just seen the late news - the senior aircraftsman, Dean Fabreham, confirmed that the footage was taken in Belgium.