A recent trip to Best Buy revealed the existence of a whole new tablet category we never knew existed -- the MEGA tablet. Halfway between the biggest ultrabook and lie-flat all-in-one, this family of giants tablets sport 21 - 27" screens and their own batteries for limited independent use! They have capacitive touchscreens and (obviously) huge, bright displays. They weigh as much or more than the average desktop monitor and thus are only semi-portable.
So far, this family of Mega-tabs seems to have only two members: The Sony VAIO Tap 20 and the Lenovo "Coffeetable".
We're not quite sure how you would use these massive tablets yet, but at least they aren't all that expensive. The Sony 20" machine comes in under a grand and the gargantuan new Lenovo 27" "coffeetable" computer is expected to be under $2 g's. The Coffeetable tablet (or should we say "Coffeetablet") will supposedly allow four independent users to simultaneously work on its surface in four different orientations!
One big drawback for Active Ink users though -- neither one comes with an active digitizing stylus that we can see.