BVH Animations are a cool new feature for game developers which allow you to embed realistic motions to your game characters. You can download free bvh animation files here. This tutorial I had originally posted at http://vtsdemozone.org/2016/02/18/using-bvh-animations-in-jme3/ where it was focusing on using the bvh animations in jme3, but from the fact that the model is animated in blender, you can still use the animations in your blender game.
In part one I use BVH hacker to extract specific keyframes and make the bvh animations suitable for games.
In part two I use Make Human to create a suitable character for my animation rig.
In Part 3 I use the Make Human Blender tools plug in that comes with make human to adjust the animation