i have never watched it. i am working when it is on. i would be hooked so i do not want to watch any episodes. i might just buy the dvd's. shows like that do not seem to require knowing any back story. they will tell you everything you need to know in the first 5 minutes.
For most people ,but, if you have watched the last 120 episodes you pick up on little things that makes more sence of the current episode. Hence the live 24 thread gives more insight by FReepers explaining or bringing to light why something was said or done. Since you said you have never watched it how could you possibly know anything about the show?