Here's a little tip you may not have known about -- while working inside Google's applications in Ice Cream Sandwich, you can long press any icon and its name will appear. This can be handy for figuring out what all those fancy new icons mean, and is a heck of a lot better than Jerry's method of "just press it and see what happens". For now, this seems limited to Google's apps, but it certainly seems like something that can be done for any application. Let's see more of this sort of thing, Google! When things are easy to learn, we all love them just a little more.