Most of the Touch videos I can find involve Windows Media Center. I was amazed how well it worked on a remote but it does just as well with Touch.It was only a matter of time before we saw a Windows 7-based "slate" computer. Anyone who's looked "under the hood" of Windows 7 Home Premium/Professional notes that the OS has a LOT of support for touchscreen functionality.
If HP can keep use as much "off the shelf" hardware as possible they could actually underprice the rumored Apple "iSlate." My guess is that HP will offer an optional keyboard that will essentially this new device into a quasi laptop computer.
I can imagine a media extender slate from Apple but then it ends up falling flat like the Apple TV. At least with the HP slate models you aren't limited to the barebones and are running a full desktop OS. Get a network based TV tuner and you're set.
I only have time to play with the standup TouchSmart. Do you have any videos of tablets? I haven't seen one of those around here.