Launchers for Android are pretty wonderful, as they can transform your phone into something totally different. There's already awesome launchers like Launcher Pro and ADWLauncher but Samsung wants to throw their hat in the game too.
I know what you're thinking. Samsung? With their freaking TouchWiz UI? Luckily, we dodged a bullet there and it's not going to be TouchWiz. Instead, it's a new interface called Pure Breeze that's, um, a little weird. The emphasis of Pure Breeze is to manage your applications with groups. On launch, it's a long vertical list of apps that isn't side scrollable, you throw the apps you want to organise into the bottom bar (which is side scrollable). There's also a floating "home screen", called The Kite, which is always easily accessible (and the place you can store your favourite apps and widgets).