Ubiquity for Firefox from Aza Raskin on Vimeo.

Mozilla labs blows minds with this mold-breaking, innovative, and nearly genius addition to the browser kingdom: Ubiquity. As they describe it,

Enable on-demand, user-generated mashups with existing open Web APIs. (In other words, allowing everyone (not just Web developers) to remix the Web so it fits their needs, no matter what page they are on, or what they are doing.)

This is an alpha 0.1 release, so I am sure we can expect a few bugs, and sure the interface is less than perfect, but the ability to simply and intuitively do things like: add a map to email; map a selection of housing listings from craigslist; or insert selected items into an email, is so powerful and so useful, that Ubiquity is already, even in this 0.1 alpha stage, remarkable.

Download it or read more from Aza here.