"I really enjoy the 'just works' aspect of MobileMe."
I was an early adopter and got burned. It never worked for me. After fighting for hours with configuration and bad Apple support (which is uncharacteristic), I realized that the time it would potentially save me was being burned up in setting it up, so I abandoned it. In the end I ended up losing $99 and gaining nothing. I'm guessing from what you said that they've worked the kinks out now, though.
Yea the launch was a disaster. They were definitely stretched too thin at the time. I've heard some people have had issues still but it has been perfect for me since I got it around the launch of the 3GS.
In the same vein though Apple TV isn't a game changer, but it could become more relevant as time goes by.