In game videos in Monster Hunter 3. Newer videos are in bold.
Commentaries
Barioth - http://www.youtube.com/watch?v=3MlBNSinYkY
Gigginox - http://youtu.be/RMe_8qx9XAY
Rathian - http://www.youtube.com/watch?v=CR8uPySB9U4
Lagiacrus & Gobul - http://www.youtube.com/watch?v=neHiMyT2raQ
Rathalos - http://www.youtube.com/watch?v=IkyHB0UkSL0