Along with the distinctive front and back, his phone came with matching on-screen wallpaper and even a specially wrapped box.

ENGADGET: Samsung sends Canadian a truly unique Galaxy S III, guarantees a loyal customer

The app can run in the background, and your lock screen wallpaper even turns into the current navigation step, so you won't be tempted to touch your phone and unlock the screen.

ENGADGET: iOS 6 review Mobile

With Windows Phone 8, Live Apps such as Facebook can even deliver real-time information right to your lock screen with updated wallpaper.

ENGADGET: ATIV Odyssey hitting Verizon January 24th for $50 Mobile

You can further tweak things by adjusting the screen swipe effect, the scrolling wallpaper, the animations and the theme.

ENGADGET: LG Optimus L9 review: an affordable mid-level Android handset for T-Mobile

And yes, "Sweep screen" nearly made us put a Karate Kid wallpaper on the Vibrant, but we ultimately decided to maintain some modicum of restraint through the review.

ENGADGET: Samsung Galaxy S review shootout: Captivate for AT&T and Vibrant for T-Mobile

Adam Lisagor, a software developer in Los Angeles, created a wallpaper for the iPad called "Fingerspoo" which shows an iPad screen covered with his fingerprints.

WSJ: Greasy Smudges Frustrate iPad Owners

Most recently action was taken against an Android app called Hobbit 3D Wallpaper HD that let people use stills from the film as a background screen on their handset.

BBC: Film studios target 'pirate' mobile apps

Now in its nineteenth version, though, it's finally getting a desktop, making it look and function a little more like a traditional OS. When you sign in for the first time, you'll see an expanse of wallpaper, with a row of apps pinned to the bottom of the screen -- not unlike the Taskbar in Windows 7.

ENGADGET: Chrome OS review (version 19)

Admittedly on the cosy side, they are beautifully decorated with cute furniture, flower-patterned wallpaper and gathered-up curtains, and all come with a wall-mounted flat-screen TV and a funky little bathroom.

BBC: The sharpest rooms in Shanghai