Code Geass is awesome
and the 2nd season is even more awesome (just look for it I'm certain you can find it)
It starts a bit slow after everything that happened in the 1st season but it will get good again quickly...and the ending is
fucking perfect; so fucking amazing to see that everything that happened in the last few episodes was just Lelouch's masterplan.
There is no 3rd season
and I would hate if there would be one because it would so spoil the ending...but they are working on an OVA, which takes place in Europe around the same time as the CG events; but with different characters. And I think there will be another OVA focussing on Nunnaly.