All 4 seasons were great. I actually liked the third season a bit more than the first. It was back to the prison setting but with a huge twist. Everything felt different. The writing was absolutely brilliant. I also liked the tv special which was supposed to be the 5th season.
The problem with the show was always the premise. I just knew before I started watching it that as soon as they got out, people would lose interest in it.
Anyway, can't wait for the new episodes. I hope ratings prove to be good enough for Fox even if they end up not renewing it for another season.
Edit: As for Death Note, it's my second favourite anime of all time. Slightly ruined by the ending. The second part of the series felt weird at first but made perfect sense.
