I was there. I just drove home and I am dog tired, but here's my update for yer:
I think Wizards won every category they were nominated in, with the notable exception of best free product, which went to Portable Hole Full of Beer. Don't quote me on that though, cause I'm just quoting the ever-so-ecstatic Jason Parent.
When Wizards didn't win, the award was won by former WOTC folks-- Bruce Cordell (best adventure), Monte Cook (couple of Cthulhu awards), Chris Pramas (two awards for Freeport).
Creature Collection II won for best Monster Supplement...
Ack, I'm just too tired to remember them all. It was definitely WOTC's night though...
EDIT:
Ok, here's the winners as I remember. If you'd edit the subject line of this thread to point people here, I'd appreciate it.
If I get any of these wrong, I sincerely apologize. (But I think I got them all!)
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Best Adventure
If Thoughts Could Kill (Malhavoc Press)
Author: Bruce R. Cordell
Best Rules Supplement
Manual of the Planes (Wizards of the Coast)
Designers: Jeff Grubb, Bruce R. Cordell, David Noonan
Best Campaign
Oriental Adventures (Wizards of the Coast)
Author: James Wyatt
Best D20 Game
Call of Cthulhu (Wizards of the Coast)
Designers: Monte Cook and John Tynes
Best Setting Supplement
Freeport: City of Adventure (Green Ronin Publishing)
Design: Chris Pramas, Matt Forbeck, Jim Bishop, Hal Mangold
Best Aid or Accessory
Dungeon/Polyhedron Magazine (Wizards of the Coast)
Editors: Chris Thomasson, Erik Mona
Best Cartography
Freeport: City of Adventure (Green Ronin Publishing)
Cartographers: Todd Gamble, Rob Lee
Best Art (Interior)
Deities & Demigods (Wizards of the Coast)
Artists: Dennis Cramer, Toni Diterlizzi, Jeff Eaxley, Wayne Reynolds, Arnie Swekel, Sam Wood, et al.
Best Art (Cover)
Lord of the Iron Fortress (Wizards of the Coast)
Artist: Todd Lockwood
Best Monster Supplement
Creature Collection II: Dark Menagerie [Scarred Lands] (Sword & Sorcery Studios)
Producers: Clark Peterson, Bill Webb
Best Graphic Design and Layout
Call of Cthulhu (Wizards of the Coast)
Graphic Designers: Robert Campbell, Dawn Murin
Best Fan Campaign Site
Conan d20 at
http://fyrestryke.com/adilbrand/conan.htm
Best Fan Resource Site
SWRPGNetwork at
http://www.swrpgnetwork.com/
Best Official Website
Wizards of the Coast at
http://www.wizards.com
Best Publisher
Wizards of the Coast
Wulf