"With over 10,000 motion capture sequences, MOTEK offers the world's largest collection of motion capture sequences. This collection is being offered as a first tier solution for your animation projects. Easily convert your 3D motion data for use in 3D applications such as: SoftImage, FilmBox, Lightwave, Maya, and 3D Studio Max. Other formats include BVH (BioVision) and C header source code."
It does require registration, but it might be a worthwhile resource to have!