Google is celebrating Doctor Who's 50th anniversary this weekend with its most elaborate Google Doodle yet: a multi-level platform game in which all the different Doctors travel through time and space to engage in various adventures, with the goal of gathering the letters that spell Google and putting them into the TARDIS. Die, and you come back as another Doctor. And you don't have to wait until tomorrow, because it's already Friday in Australia. See? You're a time traveler, too! -via Metafilter
Update: Find this game anytime with this permanent link.