Life Behind the Firewall Curtain?

beegle asks: "After a recent move, I discovered that my only broadband option is a cable company that puts all of its customers behind a NAT box. That means that my ISP gives me a 'private' 10.x.x.x address instead of a routable IP address. I'd like to connect to my machines remotely and use software that depends on a real address (P2P, games, etc.). The ISP doesn't prohibit this, but they're not willing to help, either. I've considered setting up a VPN to a friend's network, but that seems terribly inefficient. What hardware or software would you recommend for those of us who are stuck with 'fake' IP addresses?"