You might have seen BBH's waterslide ad for Barclays Bank. The digital counterpart to this is a youtube film competition to remake this ad. Friends of mine had a go their entry's called the Body waterslide, it's quite charming. If you agree give them your vote, they'd love to win the price – a world waterslide tour.
Looking through the entries there's another one that I find nice, the 8BIT waterslide version.