Google Cloud Print
First off, this thread could probably fit in numerous forums so I apologize if it would be a better fit elsewhere. I figured though that this would be of greatest interest to those of us who use iOS.
Google has announced that the Google Cloud Print service, while still in beta, is now available to mobile Gmail users. You can now print emails and attachments right from your iOS device (more info here). Just tried it here - amazingly easy to setup and works like a charm. The only issue right now is that you have to use the Windows version of Chrome to set it up as the Mac and Linux builds don't yet have support.
Anyone else tried it? If you haven't, and are interested, there are setup instructions here.