Ask HN: List of open/public databases

A year or two ago somebody posted a list of open/free/accessible datasources for hackers to download and play around with. I thought this was a great resource, so I saved it, but heck if I can find it now.

Does anybody have such a list? Things like zip-codes for the US, locations of Starbucks stores, current weather forecasts, list of major newspapers, list of publicly-traded stocks, etc. I know there are tons of open/free databases waiting for us to mashup, just can't seem to find a list of them.

EDIT: The goal is a downloadable chunk of data to mashup, reformat, and use. That means CSV/XML/etc format and a public/anonymous FTP or something.