I'm not as savy as all of you mac pros here, but I can give my unbiased opinion of it and you can take it for what it is.
This truly is perfect; between a laptop and an iPhone. When you try it, it's a completely different experience than ever using an iphone or using a macbook. You just pick it up, and you're literally holding it right in the palm of your hands. I love that I now have all 5 seasons of Lost HD right in the palm of my hands and I could watch it while I was eating cheerios in my loung chair on the porch.
Keynote, Pages, and Numbers, from what I've used them so far, are truly amazing too. I have an iphone app called "eTextbooks" that I'm waiting for them to make it more iPad compatible so I can buy my college books for it rather than blowing it up 2x.
Weather HD is truly amazing also. Labrynth 2 HD is just pure awesomeness. I've had Labrynth since the day the orriginal came out.
If there's any apps you guys want me to buy and try, let me know and I"ll go ahead and do it. I have 100$ in iTunes cards left over to play with.