I was looking at potential touch panels that could be used to control audio distribution and function as an intercom. They wouldn't control a TV but rather replace the NUTONE intercoms that were in my house when I bought it. They are a bit steep at $1200, but I like that they are Powered over Ethernet. They also have a mic and speaker in them, plus the run Windows CE and interface with the M1 Elk security system I am thinking about buying.
The details are at http://www.elkproducts.com/products/m1/ELK-TS07.htm