This is a fascinating blog post from Carl Zimmer (contributing Discover magazine editor, author, and blogger at The Loom) about bat locomotion:
How To Be A Bat [Life In Motion]
There are seven incredible videos of bats doing their thing (flying, landing, walking), and an excellent post to back the visuals. One thing that struck me as supremely strange was this concept of putting bats on a treadmill in order to study the mechanics of their walking behaviors. I mean really, no human I know walks normally on a treadmill, and treadmills were designed by/for humans. Ick. There's something sick about that entire idea. Still, I think the subject is completely captivating, and I was spellbound by the videos.