First off, awesome site. I read the background on why you created this so take this with a grain of salt :)

Using new routes for each relationship selection would be cool so that I can press the back button to return to the awesome landing page (I did see you had a return button but it took me a bit too long to see it).

Cool idea regardless! I spend way too much time browsing thinkgeek around the holidays for each member of the family.