My parents live 150 miles from NYC and I might be in PA for the summer to work my ass off if I don't find a good job in Canada during then. So NYC on a weekend in June sounds good to me. I might make it...
Dallas? Dream on...I'm not flying to Texas. I've never been to Texas and I won't do it for this little meeting. Sorry.
Since you did it in SF, it would be fair to shift half-way west or go to the East Coast, then go mid-country in 2009. The US is a huge country...it would be unfair to keep the location in one part of the country over and over.
If you want me to suggest other places, then Philly...Boston...Washington DC... Yeah, I'm East Coast biased because that's where I grew up and those places are near me than anywhere else.
It's nice to pick a location in the countryside, but in my opinion, it would be hard for some of us to make it due to limited transportation possiblities. If it's somewhere in eastern Pennsylvania or lower upstate New York, I could just drive...but further than that, sorry.
I would suggest Toronto or Ottawa or Montreal or Quebec... But getting into Canada will be harder next year since we might need passports or special passport-driver's licenses to get in Canada. If you pick one of those Canadian cities, I'd make it in November or December then. Maybe June if I could find a job in Canada over the summer.
Europeans should make up a location in Europe...don't worry about flying over the Altantic.