I believe Ubuntu For Android is the best of the new products/features from Canonical.
First of all, I don't think that Ubuntu alone is capable to properly serve all of the phone/tablet use-case scenarios, simply because traditional applications are not designed for touch input & small screens, and properly supporting those requirements in all applications would be an immense development undertaking. For the typical tablet, Android is mostly perfect for non-docked use.
For the docked-tablet/netbook with mouse/touchpad scenario, however, Ubuntu is the proper solution, not Android. A limited solution like Motorola's Webtop is worth nothing, since this will be used by power-users and those will not be satisfied with a limited desktop.
The two user interface systems would nicely complement each other. It is not a surprise, that Google is planning some kind of Desktop Mode for Jelly Bean.
Ubuntu TV is interesting but it will have a big impact only if it comes built-in with some high-volume, cheap set-top boxes (the Mele A1000 comes in mind).
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