With that said though, I've heard a lot of people say that the "air waving" (can't remember the technical term) feature of the GS 3 is gimmicky, but it's really not. For example: if you're looking at a webpage with another person, and they want to go back a page to show you something, they can simply gesture their hand in front of your phone, without touching and messing up your screen with their dirty fingers.
I think, at least, that's one of the cool features of the GS 3. I'm not so keen on the automatic eye detection scrolling, or the phone's ability to pause videos if you look away from the screen. I'd probably never use those.