Yet another gimmicky pointless feature from Samsung. Every time they announce this crap it makes me not want to buy a samsung phone because it'll be filled with a bunch of crap I don't want or need. I don't care about the stupid hand waving. I don't care about pausing the video when I look away. And I definitely don't care about "rolling" my phone to check the status. I never have my phone sitting out on the table like that anyway. I'll buy a samsung phone when they put the damn audio jack on the bottom. That's the only feature I've been looking for in a phone. And the LG G2 pulls it off nicely. As a bonus, it's hand agnostic. It's easily used with the left or the right hand. Go LG!
People will buy products with the name "galaxy" in it because of the success of their flagship galaxy s series.