The Simpsons has been on television since 1989. That is truly beyond impressive, it’s downright unbelievable. And while for many, the show isn’t quite as clever as it used to be, we are talking twenty-two episodes a year for the past twenty-one years. It would be impossible to keep things completely fresh. And with the recently released “Thirteenth Season” on Blu-ray, you can see that it started to lose some of its edge as some of the episodes are not what they used to be.