Today is the day of iPad 2 reviews. They are all coming in and they all have come to a general consensus: buy it -- that is if you are new to the iPad market. There is a debate whether or not you should buy it if you currently own an iPad 1, though I say don't. A new design, a few new features, and speed improvements does not seem like it's worth an additional $500+. For the top reviews, see below. The list will be updated as more come in.

TechCrunch Review — The iPad 2: Yeah, You’re Gonna Want One.
Daring Fireball: The iPad 2
iPad 2 review -- Engadget
Apple iPad 2 review: It's the tablet to beat - MSNBC
iPad 2: Thin, not picture perfect | Walt Mossberg | AllThingsD
Appeal of iPad 2 Is a Matter of Emotions - David Pogue, NYTimes
Pull back the cover on iPad 2

And here's a separate review for the Smart Cover:

Apple iPad Smart Cover Review | MacWorld