"First of all, I'm not the kind of guy that likes to rehash the show and so forth and so on"

Garry Shandling is revealing his disinterest in discussing the program he was associated with. He is suggesting that he does not wish to discuss the very same subjects again and again. He is likely referring to the show he was associated with, and does not want to keep talking about it. He is likely attempting to carry on from the show and focus on other projects. He is likewise most likely attempting to prevent any possible drama or conflict that could occur from going over the show. He is most likely trying to be considerate of the other individuals associated with the show and not stir up any unfavorable sensations. He is most likely attempting to be mindful of the relationships he has with the other individuals involved in the show. He is most likely trying to be considerate of their sensations and not raise any subjects that might be unpleasant.