certain ones i can watch forever like Arrested Development, I have watched all 3 seasons 3 times in a row and i plan to do it again soon . then there are those like the walking dead which i love watching the episodes the first time i am completely drawn in and excited about the subject material and characters , however watching it again I focus less on the plot and what's actually occurring on -screen and my critical eye comes out and evaluates the craftsmanship about it and all of a sudden cool effects i loved the first time around seem kind of corny . So generally i try to stay away from repeatedly watching episodes of a show unless i've taken a long , one year or greater , break from it .