30 Rock returns to the NBC lineup with its fifth season on Thursday September 23 at 8:30 PM ET. Jack McBrayer, who portrays Kenneth Parcell on the show, recently held a conference call with executive producer Robert Carlock about the show's new season and here's answers they gave when they were asked about how were they preparing for the perfect cooperation.

Robert Carlock: We're mainly preparing by trying to be as far ahead of it as we can be. It's sort of a - you know it's a new thing for us, it changes the way we write the show because we're used to being able to do a lot of things really quickly and cut away in a lot of scenes and a lot of flashbacks. And trying to keep the tone and the pace of the show the same within the limitations of - just from a writing standpoint, the limitations of doing a live show is really different and really fun in a lot of ways. So I think we have trying to do sort of a weird way we can still do flashbacks where maybe other actors play our actors in flashbacks just because we want to do all of it live and we can't have people you know teleport across to another set. So we're trying to make it - the challenge from the writing standpoint to us is try to make it feel like a 30 Rock show while only say having access to three sets when usually we're out on location and that kind of thing. But mostly I'm preparing by trying to get a lot of sleep and doing pushups.

Jack McBrayer: From an acting standpoint I know one thing that I'm really worried about is the number of mistakes that we make on a usual shoot, we don't necessarily have that luxury, so cross your fingers friend.