I make no qualms about my Doctor Who fandom in the past, so I know this is news that "Whovians" will appreciate.  Scientists at Dundee University saw the Doctor's trademark gadget, the sonic screwdriver, and said, "Hey, we can do that."  So they did.  They built a real sonic screwdriver!

The prototype machine has successfully used ultrasound waves to lift and rotate a rubber disc floating in a cylinder of water - the first time ultrasound has been made to turn objects rather than simply push them - but physicists performing the research believe it can achieve a lot more.

[via Radio Times.]

While I'm sure this prototype is a long way from being the nifty gadget the Doctor carries in his pocket, it's still exciting stuff!  For now, though, I can stay happy with the toy version my fiance got me for Christmas ('cause she's the perfect woman for me).