I don't know about the rest of you, but I have a hard time keeping up with all the conferences that are coming up. ASTD 2008 is going on right now. Here are a few that I know about in the next few months. I'd appreciate any notice on others I can add to the list:

Games, Learning, Society +Academic Fest
July 8-11, 2008
Academic Co-Lab, Madison, WI
http://glsconference.org/

Apply Serious games
July 10, 2008
http://www.applyseriousgames.com/

12th International Conference on Computer Games: AI, Animation, Mobile, Educational & Serious Games
July 30-Aug 2, 2008http://www.cgamesusa.com

SIGGRAPH Sandbox
Aug 9, 2008
Emerging Serious Games from the Graphics
Aug 12, 2008
http://sandbox.siggraph.org/about.html
http://www.web3d.org/events/details/2008-web3d-symposium-on-3d-web-technology/

Flashforward2008
Aug 20-22, 2008
San Francisco
http://www.flashforwardconference.com

Joint ADL Co-Lab Implementation Fest 2008
Aug 25-28, 2008
Orlando, FL

Virtual Worlds Expo
September 3-4, 2008
Los Angeles, CA
http://www.virtualworldsexpo.com/

Austin Game Developers Conference
Sep 15-17, 2008
Austin, TX
http://www.austingdc.net

MODSIM 2008
Sep 16-19, 2008
Virginia Beach, VA
http://www.modsimworld2008.com

The Millennials Conference
Sep 25-26, 2008
New York, NY
http://www.millennialsconference.com

Learning 2008
Oct 26-29, 2008
Orlando, FL
http://www.learning2008.com/

DevLearn 2008 Conference & Expo
Nov 11-14, 2008
San Jose, CA
http://www.elearningguild.com/content.cfm?selection=doc.24

IITSEC
Dec 1-4, 2008
Orlando, FL

Living Game Worlds
Dec 1, 2008 
Atlanta, GA
http://gameworlds.gatech.edu/

e-Learning Guild Annual Gathering 2009 Conference & Expo
March 9-12, 2009
Orlando, FL
http://www.elearningguild.com/content.cfm?selection=doc.24

DevLearn 2009 Conference & Expo
Nov 9-13, 2009
San Jose, CA
http://www.elearningguild.com/content.cfm?selection=doc.24