On Waterpoint, I have implemented a SVG-based ocean map which displays the location of things in the virtual ocean and uses SVG animation to predict future locations.
Scraps
Object embedding test. Tests browser support for atypical combinations of media types and embedding elements (e.g. image/gif in OBJECT, image/svg+xml in IMG). Needs some more test cases.
The Very Ugly Page. Started out to check browser conformance regarding border-color, now also exercises absolute positioning, :hover, text-transform, overflow: hidden, :first-line, :first-letter, and shows a slightly tweaked-to-look-better drop-cap effect.