It's great to see so many Widget/Gadgets already in development. Dashboard is actually really wonderful once you get to using it. So much more elegant and unobtrusive than Konfab (12" Powerbook: Always looking for ways to keep my screen uncluttered).
While we're talking about Dashboard widgets, I'll mention the two I've done (and it was surprisingly easy to work out). Both of them are over at the Dashboarder, but they're a bit older, so they're in the archive.