Occassionally I see people complain about the lack of an ATI driver that supports 3D acceleration, and I came across a page with a port. I doesn't build the module to the BSD kernel like the linux counterpart does, consequently assisting in the 3D acceleration, but from what I've read this port helps OpenGL performance somewhat.
The link above is some general information, the actual link to the tarball is here: http://www.neovanglist.net/~Neovangl...A.i386.tar.bz2
Its a few months old, but its a good sign that a few developers are interested in porting it.
edit: looking around the forums, I see this isn't too new, but fuck, its not a bad rehash. :P