Slider is the October theme from Joomla Bamboo and it really has to be seen to be believed.
It's a whole website on one page or as Joomla Bamboo call it, a business card.
It's using mootools so you can have all these module positions all over the page that don't need the page to reload every time.
It also comes with a stack load of colour features and some really nice effects. This isn't going to be used for a content heavy site but if you've got something in mind that is elegant and simple, then this could be for you.
Visit Joomla Bamboo for more information or a demo.