Matt Cutts from Google reveals this easter egg in the video below and you can try the secret code and enjoy it. I know most QOT readers use Google reader, so if you are reading this in Google Reader right now, see the video and test the magic for yourself.
In case you did not catch that video, in Google Reader press following keys in this order – Up arrow, Up arrow, Down arrow, Down arrow, Left arrow, Right arrow, Left arrow, Right arrow, B key, and lastly A key. See the Ninja! Break a heart!