I join to a vote, especially for GL_EXT_path_rendering.
John Carmack made the comment that WGL_EXT_swap_control_tear will be supported by ATI and NVIDIA when RAGE launches as that game will be the first game to make use of it.
Something like setting wglSwapIntervalEXT to a negative number enables it. Someone might want to do a quick test to see if it is already in the ATI driver (but not advertised).
John also said Intel were also working on implementing it. So it should be standard by the end of the year.
I even forgot about NV bindless extensions (2 years old) which provide pointer like support in shaders.. perhaps even AMD current architectures can't work efficiently with that but coming soon core next I hope this extension can be exposed also on AMD OGL driver..
Does AmD have plans on supporting it soon (for next hardware)?