Today's dose of downloadable Mac geekery is a double dose: a Dashboard widget from Blue Lemon software that counts down the seconds until this year's Dr. Who Christmas episode ("The Runaway Bride," for those of you keeping score) airs on the BBC. Because nothing says Christmas to me like a countdown to an invasion of Robot Santas.

Previous 12 Days of holidays downloads for OS X:
Day 1, Day 2, Day 3, Day 4