The Samsung Galaxy S line of devices are getting ready to hit the US like a wave of awesome. Starting with the T-Mobile Vibrant on July 21st, all four devices should be hitting the streets by the end of the summer. Yesterday we reported that Samsung was prepared to spend what it takes - most likely somewhere around $100 million, like Verizon did to promote the DROID - to assure the success of its four high-end smart (perhaps super?) phones. Well, thanks to AndroidCentral and YouTube, perhaps this is just a taste of things to come. Check out the two minute promo video for Sprints second 4G device, the Samsung Epic 4G, and let us know your thoughts!