Awesome and scary at the same time: Everytime you sync your iPhone with your Mac/PC, iTunes will make a backup of your location data. Alasdair Allan (@aallan) and Pete Warden (@petewarden) discovered this and decided to create an open source application called iPhone Tracker that visualises this data.
Got an iPhone? Download the Mac application and try for yourself: LINK
The weird way to charge your iDevice.
This beautiful iPad app called Flipboard combines all incoming content from your social media friends/followers in one very stylish, personal magazine. Nice!