Beyond Barrel Roll: 10 Hidden Google Tricks:
We got a taste of that fact on Thursday with the highly popular “Do a Barrel Roll” search trick, which went viral on Twitter and brightened a million work days. But that’s only the latest in a long line of quirky features Google has embedded in its products. We’re not talking about useful stuff like the in-search calculator, or Google’s much-documented April Fool’s jokes. These are all fun built-in tricks you can amuse yourself with right now.