So I saw this trick on one of those banned sites and it actually works. If you set your wireless network to be named attwifi and make it unsecured, then add that network on your 3DS... you can access the Nintendo Zone from home! So whatever demos (right now it's just Mario & Sonic), Pokemon TV show episodes, and other content they have on there is now accessible from home.
I did a little video demonstration as well: http://www.youtube.com/watch?v=T6jDBEE3je4
It was very slow for me, but I'm not sure if that's cause I set the attwifi network on my Linksys router, which is connected to the Verizon FiOS router I have, rather than just renaming the FiOS one. But it does work, so that's cool.