I don't often have to print documents, but when I do ...
Google Cloud Print is pretty handy, letting you print anything from anywhere using Chrome with your own computer and printer. With today's release of the official Android app, you can now print to your Cloud Print enabled printers straight from your Android devices.
Doing so is simple, just open the app and use Android's sharing menu to import whatever it is you want to print. In fact, the hardest part of it all is setting up your computer and printer to work with Google Cloud Print, and that's pretty easy.
While most of us send files and documents through the Internet in this day and age, having an easy fall back to get paper copy is nice. Grab it from the Google Play link above.