They offer a .deb package that works on Ubuntu, so installation is easy as pie.
I think they have a better collection of tv channels.
For instance, me being Belgian, I find it great that they have VT4. A commercial station that broadcasts shows like friends, dexter, lost, heroes, according to jim, … and movies.
They all have the original English audio so anyone can watch them (they do have dutch subs).
Some other channels include a poker channel, a motor sport channel, …
A full list of channels is available on their website.
Again, just as with livestation, the app is glitchy when using compiz fusion.
Install the Compiz Fusion Icon from the repos to switch to Metacity before using it.
On most channels playback is good, there are however some that are a bit shocky.