Jess & RussJessica Hische
Its hard to put in words the awesomeness of this wedding site, you really need to experience the parallax scrolling and illustrations yourself. Can imagine this site took months to build and so worth the result.
This website has unfortunately been redesigned or gone offline, so I have removed the direct link to it. The screenshot below hopefully preserved enough of the design but if you are really keen to inspect further, try this Archive.org link. FYI: the site was first featured on 27 June 2012.