Nice OpenGL book. You ever crack it?
I got a project now with some guys who want me to document an OpenGL ES port (come up w/ schematics, drivers for new hardware, etc)...and I have no clue about OpenGL 
(actually it's supposed to be me and another developer whose an OpenGL & drivers expert...I'm just along to do the docs and website...but they haven't hired this other developer yet and keep asking me to write the spec
)
I did 3D Visual systems engineering/development for 4 years at Lockeed Martin...

ES is for handheld / Pocket PC based architecture if I rememeber? Anything you wanna know man, I'm having glRotate(x,y,z) flashbacks as we speak

. I'm pretty knowlegeable about hardware architecture as well, especially with Nvdia chipsets (doesn't apply in your case but still)