For those of you who don't know, PyMEL is an open source project that brings an intuitive object-oriented design to Maya's python. It's positioned between maya.cmds and maya.OpenMaya in terms of speed and complexity, and is designed to easily interoperate with both.
download:
http://www.highend3d.com/maya/downloads/to...odule-4844.html
docs:
http://pymel.googlecode.com/svn/docs/index.html
bug tracker:
http://code.google.com/p/pymel/issues/list
pymel + ipython demo video:
http://www.youtube.com/watch?v=EaIT8czZrlo