ASUS has introduced the G10 desktop PC which includes an expansion bay that can accommodate a optional mobile power pack that when plugged into the expansion bay provides mini UPS capability (only has 20 sec runtime though).  When unplugged it acts like a portable USB charger.  Interesting approach and general node to mobile dominance.

For me, I like some of the all-in-one PC we are seeing (Sony Tap 20, Dell XPS 18, Lenovo IdeaCentre Horizon, HP Rove 20).