Being a web developer sometimes comes in handy, TheImesons.com/Wedding was the wedding site for LimeCuda co-founder Blake Imeson. The site allowed friends and family to see where Blake and Katie were registered. There was also a form that allowed guests to RSVP.
Has a neat feature in the header that told how many month/days/hours away the wedding was. Now it displays time since the wedding. :)
The site matched the colors and aesthetics of the invite materials and the wedding.