Today Gmail's "Undo Send" feature finally comes to the standard version of Gmail. With it, a renewed interest in the labs where it was born. This system is called Gmail Labs - a place where awesome features are thought up and tossed into the fray with wild abandon. Sort of. While there's still some testing that goes on behind the scenes, Google offers up a place where users can test out the oddities before they reach prime-time. There you can play with the toys before the toys come to all the other girls and boys.