The new Google VPN client is interesting.  As James Enck suggests, no monopolistic broadband provider in its right mind will want to block VPN transmissions.  But there's no telling what kinds of things could be inside -- the "triple play" in a tunnel, perhaps?  Voice, video, data, file trading, all streaming along (and through Google's servers at some point, by the way) without the network provider's being able to charge for special services.

It's the Darknet doing double-duty as a business plan.  Go, Google.