I looked at the site, and I see some data but I didn't find what I would have hoped for. I couldn't find yield curves, and historical exchange rates <i> up to <i/> today (available on the ecb site in xml format). Certainly I would have thought yield curves were a front page item.

Things that would be very cool would be 1. financial statements in a database format. I know you can scrape this but I don't know if they are available legitimately? 2. Historial Implied volatilities and historical observed volatilities.