Recently, there has been a trend about Google doing a barrel roll. What is this, you ask? Well, if you try and search for "do a barrel roll" in Google, you just might be surprised with what's in store for you. =)
While you're at it, try searching for "Askew" and "Tilt" as well.
Only works on Firefox, Chrome, Opera. Doesn't work on mobile browsers, and definitely doesn't work on Internet Explorer.