Ease of use
Design and form factor
As CheapyD from Cheap Ass Gamer famously said, "Even my toilet gets Netflix." So why get an AppleTV? I picked one up as a cool gift for my Dad, who is impossible to shop for. It ended up being so useful for sharing photos from our iPhones when we get together as a family, I got one for my sister, and finally one for myself. Yes, it does music and movies from the iTunes Store, iTunes Match, Netflix, YouTube, Podcasts, and a few other random providers, but it works so dang well with the iPhones for sharing media that it has become a focal point at family gatherings. I can't wait to see what it does with the next version of OSX.