Here are some of the big gaming names that I have meet though most would likely not remember me. (Most were just quick meetings at conventions.)
E. Gary Gygax (if you are at a convention where Gygax is giving a talk, attend. You will gain insights and laugh your head off.)
Monte Cook of Malhavoc Press --(Good gaming design tips and writing tips.)
Chris Pramas of Green Ronin
Nicole Lindroos of Green Ronin
James Wyatt
Tracey Hickman
Margaret Weis
Jean Rabe
Jeff Quick
Mark Clover of Creative Mountain Games
Mark Plemmons of Kenzer Company
Hal Greenberg
Eric Noah, Piratecat, Morrus, and many other wonderful EN Worlders.
I am probably forgetting a few people as well. So, if I have forgotten anyone, I am sorry.