Do you remember the dark ages when printing a file required actually plugging a printer into your computer with an actual cable? Those days just receded a little further into the past.
HP announced today that its line of ePrint printers would now work with Google Cloud Print. You can now print a document from any where in the world to any ePrint machine. You’ll need to setup the printer with a Google account first, and right now Google Cloud Print only works from certain mobile Google apps (Gmail, Google Docs, etc). but even so this is a big improvement in usability.
You can also set up Google Cloud Print with other printers, but it will require an attached computer running Chrome browser.