In the interest of full disclosure: I hate Dell products. As a little kid, they were the only computers my parents would buy. I spent my childhood chained to crappy, anemic "gaming" rigs that broke down after a year or so of moderate use. While the company's quality control has improved in recent years, uninspiring products like the Streak haven't increased my faith in Dell.
The Inspiron Duo is a purported "bridge" between netbooks and tablets. While I question the necessity of such a device, the Duo might actually be cool enough to overcome the stupid category Dell wants to stick it in. The fact that it folds OUT from a tablet TO a netbook is enough to make this thing exciting to Professional People.
Obviously, a good deal of this thing's utility will depend on battery life and processor power. If the Duo can compare to the iPad in the former and beat it in the latter, I see it earning a comfortable niche. This is the kind of product that could develop a cult following. The form-factor is certainly novel enough.
You've piqued our interest Dell. Don't screw this one up in the home stretch.