Still not terribly impressed. Don't think it's 'revolutionary'. Really don't think it's 'magical'. Still tentatively agree with the comparisons to the AppleTV.
Not the end of any 'era of computers' (insert reverb here?). Moving, somewhat more towards touch-based input instead of mouse-based, possibly -- though this has been happening for years with trackpads, to an extent (though anything finger-touch-based tends to be somewhat poor when it comes to precision -- see paintbrushes/painting, pens/writing, and mice/fragging). Away from more traditional computers (meaning anything ranging from desktops to netbooks), definitely not.
I don't care how nice your touchscreen is, it will always be crap for significant text input (even something like this post) compared to a real, physical, hardware keyboard. The 'keyboard' has been around for well over a hundred years -- sure, it's been streamlined from those multi-level circular-keyed monstrosities, all the way down to 'chiclet' keyboards, but the basic layout and concept hasn't changed in a long, long time. It just works well for what it does.
And a keyboard 'dock' doesn't really cut it. Never has (see ~1995-2005 and PDAs), never will. Keyboard docks don't fit nicely on your lap, are usually too close/awkward to the screen for long-term use on a desk, and tend to make touch (or pen) input awkward as hell.