I have one, it's awesome!
Netflix is something that just has to be done... It's not got lots on but slowly getting there, only £6 a month though!
AirPlay is another good thing... I have a MBP, iPad3, iPhone4s (wasn't going to get the 5, but hate not having the new one, so buying it Wednesday haha) and everything 'just works' together.
If you buy a program for the MBP called airfoil you can stream all the audio from the MBP to the apple tv or another AirPlay device, and use them as speakers. I currently use my home cinema as speakers when I'm sat around listening to music.... No wires
You can also control it through the 'remote' app on the iPhone, if on the same WIFI network...
Everything has their haters and lovers though, a lot of people will say it doesn't do enough for the price tag... But put it this way my mum is the biggest technophobe around, since showing her this, she's bought an iPhone and an apple tv

haha