Well, quite known already, but let me list the coolest / geekiest Google Eastereggs for you.

At first, some

Hangouts

(Google Chat app) eastereggs.
Try to type in “/ponies” (without the ” offcourse)
Ain’t that fun? Got some more for ya;
– /pitchforks
– /ponystream
– /shydino
– /bikeshed

Next, go to Google.com and try searching for “Do a barrel roll”
If all went well, your screen should do, indeed, a barrel roll.

Or eh, try “askew”….

Youtube has its own fun,

If you open a YouTube video, click in the frame right after the video starts loading, then immediately type one of the keyboard’s arrow keys, you can start playing a game of snakey on the video as it plays. Don’t run into the walls!

And then, at the end, if you are done with everything, try searching for the answer to everything….
“what is the answer to life, the universe and everything”

Have a good one!