Just found a trio of new videos, as well as an Iwata-Asks (currently Japanese-only), all through GoNintendo.
First, a GameTrailers breakdown of the recent Japanese Nintendo Channel movie
Then a short (and sadly low-quality) video that demonstrates a lot of finishing blows
Third is a little odd, as some sections are missing sound and the very end is a repeat of the beginning, but the stuff in the middle is invaluable. Look for that shot of a desert canyon section. Gorgeous!
Anyone who wants to try, here's Iwata Asks
http://www.nintendo.co.jp/wii/interview/r3oj/vol1/index.html
If it weren't for the damnable Kanji, i could probably take a crack at it
Monster Hunter: pissing me off since 2010.