I also would like to have full functionality for Xfinity.tv on my touch Pad !! Would be a really great addition!
When I first navigate to xfinity.tv, I get the warning about unsupported browsers. Continuing through that to log-in, I get sent back to that warning page after logging-in (silly?).
Trying to use the "TV Listings," I am unable to see any listings or set my DVRs (page just seems to load endlessly).
Watching video seems hit-and-miss ... although mostly miss. Nothing I've chosen to watch has been available, but the error message seems to vary by the program. I've concluded that some work, most don't.
Watching sports (Copa America) was unsupported for my browser.
Watching CBS worked for a preview videos but not for the full-length shows (of which there aren't many anyway), I got more "networking error" messages than actual video..
Trying to watch "America's Got Talent," I got a lengthy attempt to start playback that never resulted in actual playback (nor an error message FWIW).
Today, just choosing a random SpongeBob episode from the "Play Now" viewing program, I was invited to install Silverlight ... which then switched to moonlight, which is the linux version .. but then it gives me an option for installing the FF or the Chrome plug-in, and I balked. Anyone have any recommendations?