I recently became a Dr. Who fan when I stumbled up the latest several reincarnations of Dr. Who on Netflix. I quickly worked my way through the episodes of the Ninth, Tenth, and Eleventh Doctors.
If you know anything about Dr. Who, you know about his Sonic Screwdriver. On the show, this fine bit of alien technology seals doors, hacks into computers, and may even drive screws.
Now, you can get this replica of the 11th Doctor’s sonic screwdriver, as well as several earlier models, from ThinkGeek. They’ve got a bunch of other Dr. Who stuff, too. Great stuff for the geeks on your holiday shopping list.