The last time I made a comment about this type of thing, I was verbaly raped...Anyway...
All I think is that people are trying to over complicate something which otherwise would be very simple. Considering the amount of different sports involving bikes out there, The difference between Matt B (Sorry dude, you should be taking this as a complement (Y) ) and his style of approaching obsticals and the way (for example) the Cousts do, is farely minimal. All he is doing is giving his moves style with more BMX orientated variations, whereas the Cousts may leave the back brake off when they tap. Despite appearing completely different, it's really the same stuff.
Anyway, like alot of others, I think I lost the point somewhere...but anyhoo.
Matt's probably quite a bad example...because I believe he's decieving us all. I think he switches his little red button under the BB shell, and his Curtis grows to 1100, he rips off his clothes to reveal a full length Curtis Lycra Trials suit ( for ages 10 - 13 for maximum tightness) and he goes a-tappin !