Barrel Roll: Type “Do a Barrel Role” and watch the entire page flip upside down
Ninja! Go to Google Reader, then use your cursor keys and type: up, up, down, down, left, right, left, right, B, A. A ninja will appear on your screen and into your search box.
ASCII: Searching for “ascii art” will be the nerdiest thing you did all day, but don’t worry, the payoff will blow your mind* *No it won’t
Recursion Search for “recursion” and Google asks “did you mean recursion?”. Mind blown.
Chuck Norris: Search for “Chuck Norris”, hit I’m Feeling Lucky, and watch your back.
Askew: Search for the word “askew.” Now tilt your head.
Flight Simulator: This feature began its life as an easter egg, and became so well-loved that Google incorporated it as a feature in Google Earth. Inside Google Earth, Click on Tools > Enter Flight Simulator, and you’re off!
Nessie Trick: First, you’ll need to set your iGoogle homepage to the beach theme. Wait until 3:14am (or cheat and move your clock forward).
Google Logo Pacman: Click HERE. Kiss your afternoon goodbye.
Google Gravity: Enter “Google Gravity” in the search bar. Hit “I’m feeling lucky” (if you have Google Instant enabled, it’s on the right hand side of the suggested searches). Try searching for anything and see if you can pick up the mess.