Hey guys, I see tons of posts about the benefits of Apple TV. I just dont get the big deal im considering purchasing one but im not sure if it will be a waste of mine. I can already watch bought movies from itunes and ripped content on my mac mini thru hdmi. Can someone please explain to me how is this different from a mac mini with a external hd attached to it. Please let me know Im thinking of making the plunge but i need to be sure.