I'm going to render some frames from 3ds max of a walk and run cycle for
you and post it on my website. The renders will be of the biped skeletal
system, so it should be a decent reference for most character models.
I'll have that up by the end of today.

You could also load a model into MED that already has animations and
"scrub" through the timeline every 5 frames or so and take screenshots
to use as a reference.