In A Down Economy, Startups Rise From Coworking

Has anyone worked from another coworking environment in a different city? I wrote about betahouse, as it's the only one I know here in the Boston area, but if there are others, I'd love to hear about what people have thought of them. Thanks.

There are also a lot of weekend Hackers who have full time jobs during the work week. Does anyone know if there are weekend cowork programs out there?