I've never been a fan of retractable USB drives. They always manage to get dirty.
The wireless USB hubs are something I've been interested in for a while now, and I'm glad to see them in force at the show.
Also, the Logitech Di Nuvo Mini is a pretty awesome keyboard, I must say. As you say, great for media center computers (I've also heard rumours that it will be PS3 compatible).
Sub-notebooks are also a great idea, and I know someone who recently bought one. They are a good alternative for an average computer user rather than a crappy Dell or something similar. They don't like memory/graphic intensive programs at all (they even stumble in Firefox).
Michael: Jodie, how's my schedule look for today? Jodie: You've got a conference and dinner party at the Japanese Embassy regarding wildlife protection. Michael: Oh, yeah...sorry, but I'll have to cancel that. I'm heading out to save America!