I am still trying to figure out how the iPad is going to fit into my everyday life. Although, I have noticed two phases in adopting it.
1) holding is believing.
After seeing the video demoes and watching the ads I figured the device was cool, but how cool? It's not until you hold the iPad that you realize how incredible it is. Something to do with putting the hardware in the background, or some crap like that. Holding it was enough to covince me it was cool, but i wasn't sold. It took a few more weeks before I cracked and bought one. Just playing with the demoes I wasn't sure what I'd do with it.
2) customizing it.
It's not until about a week of use that I "got it", the tipping point comes after tweaking and adding apps. Suddenly the device becomes personal and I finally saw it's value. The iPad is whatever you need it to be. I'm still fitting it into my day-to-day but man it's cool.