It's less likely that I could make it to WC06 if it was in California... so I vote for Seattle.They've got the Space Needle, the IMAX theater (which always has good movies), the University district has some awesome places.... And I'm sure we could find more stuff to do. We could even do a day trip to the islands where I live (kidding)!

Oh yeah, we COULD take the duck tours... ;] (Amphibious vehicles that ride around Seattle and give you a bit of history as well as provide you with quackers.)

Anyways, I wouldn't mind California, or Vancouver either. California would be more work, but I've only been there a few times, so it would be a bit of an adventure.