123D Catch - 3D models from your own photos!
I have been blown away recently by 123D Catch by Autodesk - and it's free! I first came across it on the iPad. You take a series of photos from different angles of an object - it can be anything from a small toy to a complete building, including images of people if they keep still long enough - and those then get sent to "the Cloud". Sent back in a few minutes is a complete textured 3D model which you can display and view from all angles on the iPad.
Better yet, you can download the desktop version of 123D Catch where you can re-download your model and edit it, removing unwanted pieces and then save out as an OBJ file, so that you can use it in your favourite 3D software. Or you can upload your photos from a higher res camera and create the 3D model from those. And all free! The results will obviously depend on your original images (garbage in, garbage out...) but I have already produced some interesting and useful results.
If you ever wanted a desktop digitizer and couldn't afford one, this may well be the next best thing!
Have a look here: