Apple - What tiny thing in iOS 5 makes you smile, or has caught you off guard?

Usage shows how much space each app is using

Settings -> General -> Usage

iOS 5 now collects the space used by apps and the data in the app - sorted by the largest size. If you need to free up some space quickly, this is a great way to easily identify and remove the largest burdens on your storage space.

Of specific tiny note, the edit button in the top right allows you to delete selective content from apps like Music.

Retractable Keyboard in Messages.app

The neat way that you can scroll down on iMessages and it pulls the keyboard down with your finger.

Undo Close Tab

In Safari on the iPad, tap and hold the [+] button to display a list of recently closed tabs instead of creating a new empty tab.