While many are buying Google Nexus 7 for the stock Android experience, some yearn for more features from the default launcher. To those, I recommend trying Nova Launcher Prime. This was suggested by an XDA user who also made a video of it in action.
This is what he says about Nova Launcher – “Very lightweight with the default settings. Turn off animations on Jelly Bean developer’s menu and launcher configuration,and turn on Force GPU rendering and watch this bad boy take off! “. Shown below is its video:
Oh, for those weather animation are by an app called “BeWeather”. Also check out about the camera app on Nexus 7.