Google always drops a little something fun inside their OS builds just for kicks. None of them ever serve  much of a purpose, but knowing about them can make you look that much cooler when showing off Jelly Bean to your friends. Just as with Ice Cream Sandwich, pop into your Settings > About Phone and then tap on the Android version a bunch of times. It will eventually pull up a happy little Jelly Bean with Android 4.1 Jelly Bean listed on the screen. Once you see him, you can then press and hold his face to get tot he animated aspect of the Easter Egg where there are floating Jelly Beans of different colors that you toss off the screen. Again, just something kind of fun from Google. Check it out in the little video below.