Motorola Droid Razr HD
Here's a case for the Razr HD. It's a form fit so make sure your print is accurate within 0.015" or you'll have some work to do with a file. The grooves weren't quite right when I printed it so I changed the model slightly and ended up just hot gluing the two pieces together.
UPDATE: I've changed the model once again, with the prospect of changing it one last time. I've added tabs to the top piece and slots in the bottom so they snap together now. I'd take a picture, but my camera is now encased...
UPDATE: Due to scaling issues, I've uploaded .STL's in Inches as well as the designs SketchUp file.