I haven't seen the first season.
I asked for it for Christmas, but I didn't get it sadly. I guess I will have to get it on Blu-Ray myself now!!!
I love having it on DVD. It is awesome, especially since I made my girlfriend watch it and now she is addicted to the show as well!
I am on the lookout for season 2 as well. But season 3 looks to be very interesting after seeing how the 2nd ended!