One caveat: the MOTEK files aren't in BVH format. You have to convert them with the free utility provided.

It is a nice collection, however. That's where I got the mo-cap file for my Music Box Dancer animation.

Here are some additional links:

http://engr.oregonstate.edu/~zier/Assignment4BVH/

http://www.cs.wisc.edu/~pingelm/ComputerAnimation/Motions/bvh/

http://www.ict.usc.edu/graphics/animWeb/humanoid/sampleData.html

http://www.solfics.com/motion/sample.htm

http://www.the-forge.ie/images/order_form/bvh/p10bvh.htm

http://userdata.acd.net/cady.patrick/BVHfiles.html

http://www.faint-light.com/faint-light/motionview/ht/bvh_3d1.html

http://www.accad.ohio-state.edu/~jwoodrin/mocap/Clips/