Today's Google doodle is a short Turing machine demo, in honor of Alan Turing's posthumous 100th birthday*. Nice*.
BONUS: here is a link to a short (5 minute) film called "Codebreaker" on Alan Turing's lifetime achievements.
* although the ultimate tribute would have been to build a Turing machine using sprites.
* culmination of the Turing Centenary year.
UPDATE (9/8/2012): I found a tribute to Turing from a computational neuroscience perspective in the latest issue of Trends in Cognitive Science, (Volume 16, Issue 9, 447–448). Featuring: Christof Koch, James McClelland, and Terry Sejnowski among others.