See the picture above for yourself.
First one is , well, a regular video play session. And when you click the button at the lower right corner, BAM! it takes you back to home screen, only with the video still playing on top of the screen.
And if you are interested, you can even ... put the screen up playing video while you are playing Temple Run.... good luck with that run though. Video is still playing without any hiccups... thanks to the quad-core 1.6GHZ CPU and GPU support.
Have fun with your new toy guys. Sammy definitely got this phone right =)