Since I don't know any of them personally*, I can't stat them per se, but I can offer some possibilities for SA's and SQ's:
Monte Cook:
Revamp Ire (Ex): Monte Cook can readdress a classic D&D module (i.e Temple of Elemental Evil) in such a way as to make it fresh, exciting, and yet nostalgic. Players who fail a Will (DC 25) save will actually enjoy themselves as their characters die (no save)--one after another.
Gary Gygax:
Grandfather Claws (Su): Gary Gygax can, at will, switch a rule from a later edition of D&D back to the original (AD&D) rule with respect to himself, and attacks made by and against him. This is almost always fatal to 3rd Edition creatures with very high armor classes.
Ryan Dancey:
OGgLe (Su): As a gaze attack, Ryan Dancey can claim an ability of any foe as a derivative work, and may use it himself as long as he cites the work as derivative and does not explain how he is able to use the experience points he gets for whupping your butt.
Bruce Cordell:
Psionics (Sp): At will, Bruce Cordell can sneak a psionic reference into any written or electronic document in which his name appe--HEY! HOW'D THIS GET IN HERE??!!?!
Ed Greenwood:
Resistance to Blades (Su): Ed Greenwood always fails his Shaving Throw when a slashing weapon is used near his face.
(have you seen his beard?)
Eric Noah:
Pied Piper (Sp): By uttering the phrase "chat for a bit?" Eric Noah can summon 3d10 EN World Members to the #dnd3e IRC chatroom. The summoned members automatically return home when Eric leaves.
*I met Eric Noah a couple of times. He gets a +1 size bonus to his AC and base attack, as well as his Hide checks. 