As promised, here are some thoughts on the iPad I bought last week (on which I'm writing this very post, using the onscreen keyboard).
Positives: The screen is gorgeous. Pictures and (non-flash) video are delightful on it. It's particularly useful for streaming video, such as the anime simulcasts on Crunchyroll using the Crunchyroll app (I hope the iPad optimized version of the app comes out soon) and ABC shows (again, using the ABC app).
Negatives: It won't replace a laptop or net book for creating content. The onscreen keyboard is nice and large, but still doesn't replace a physical one-- especially when you have to switch keyboards to pull up numbers or symbols, and when the device limits the keys available (such as when I type in the web browser window, and the device won't give me a spec bar). The limited multitasking and the Balkanization of the apps are also limiting -- each app has a different method for transferring data to and from the iPad and there's no guarantee that stuff pulled in through one app will be available for other apps. It's not as useful for book reading as my Nook; the Nook is lighter, easier to work while handheld, and has that e-ink display that can be read for a longer duration.
Overall, I'm happy with the iPad, and excited to see what app developers will come up with for this new platform.