I just started working with a client that has an office in the US and an office in China. They are having issues with Chinas big firewall :) blocking access back to some of their sites. Right now they have a site to site vpn setup from a Cisco ASA in China back to a Sonicwall in the US, and the interesting traffic defined to go over the vpn is the LAN to LAN traffic.
Would it be as simple as adding internet networks to the interesting traffic acl on the China side to circumvent the China restrictions and have this traffic go over the vpn back to the US. I don't think we would want all the Internet traffic, but at least include the sites they are having issues with.
I have been doing some quick google searches but I thought I would throw it out here as well to see how many others have run into this problem.