I know we've beat this topic to death, but I'm really intrigued. I subscribe to Computerworld at work and this came up today. Just amazing stuff in a seemingly short amount of time!
http://www.computerworld.com/slideshow/detail/121544/18-supercool-objects-made-with-3D-printers?source=CTWNLE_nlt_dailyam_2013-09-27#slide1