I recently got an Lenovo A720 all in one machine with a 27" touch screen and installed Win8 and JRiver on it.
While not fully integrated yet, I have been blown away by the experience. Touch control in Theater view is not quite perfect but very usable. Audio library navigation works great, however, it is a bit tedious for a 2600 album collection.
Playing back ripped DVDs and Bluray discs works very naturally.
While I did not think I woud like the touch interface I have to say it is pretty impressive and easy to use on that large form factor screen and having JRiver there made it even more seemless.
Cheers
Thomas