Patmont Motor Werks have an interesting CIDLI suspension system, and have incorporated it into and Electric dirtbike (well, Super Moto really).
Check out the details here:
And when you look at the video, note that the stoppies dont compress the front suspension hardly at all, that could make for some interesting characteristics on the trail as well, but i'd like to see it in action with some big jumps and stuff, as it just doesn't look strong enough.