Laser Beam by Magda Sayed. It's like a knit cozy for your phone! Too cute! You can manipulate the scale and angle of the design. I played with it for a minute and like this arrangement best.
Above: Hare by Marco Cibola
Above: Haiti Fractured Mosaic by Scott Wilson -- 100% of profits from this case goes to the Red Cross. Currently, they have several designs to raise funds for Haiti.
As you can see, I favour multi-coloured things!
Images from http://www.getuncommon.com/