Funny thing: months ago Engadget actually had an app in the Marketplace, published by AOL. Then it was pulled after a day or so, no reason given. Flash forward to July 1st and what a shock, they too are pushing their new app. Sure, they've been accused of an anti-WP7 stance, but doesn't mean you can't have them on the go!
Featuring all their major section like HD, Mobile and Alt., the app has a nice and vibrant layout, with videos, podcast and galleries available. Commenting is handled by hopping to the browser instead of native and there's no way to share articles (though you can save them) but at least it looks good for a v1.0 and scrolling is pretty solid.
You can get downloading from the Marketplace here.