The Doctor's Sonic Screwdriver

With seasons going back to 1963, Doctor Who is one of the longest running science fiction shows in television history.  It's getting to be more well known outside the United Kingdom thanks to the first four seasons of the series' revival being broadcast on the Sci Fi Channel (now known as SyFy for some strange reason).  The show is about a Time Lord who goes by the mysterious name of 'The Doctor' from the planet Gallifrey.  He's an alien who looks human on the outside, but has a different anatomy on the inside.  He travels through space and time at the...