If you've ever needed to jot down a quick note on the go, I hope you used Evernote to do it. The Evernote service, and the accompanying app, make it easy to keep all your notes in the cloud. This app has long had great features like audio notes, notebook categorization, and tagging. Now Evernote is getting a little more awesome for anyone running Jelly Bean.
Android 4.1 supports expanded notifications so you can trigger actions right from the drop down.