Too bad you need to join the dark side to use it.

Really? Or does it just look like one before you turn it on?

http://xkcd.com/1397/

Apparently Randall has spent some time in this area before, Lisp is the lightsaber

http://xkcd.com/297/

Given how stable the compiler is at the moment, pretty sure that lightsaber would accidently take off a few limbs.