For a first episode it was very good. That means overall it was decent.. Some stuff worked, some didnt and it was a little shaky.. but the first season of most shows is shaky because they dont have a feel for the charachters yet. By season 5 the charachters become charactures of themsleves and it all goes to hell. Seasons 2-4 are where its at for most TV.
Right now they are all over the place with his charachter.. One scene he is Castanza, the next he is Ray Ramano and then he is Bill Cosby. I think they will eventually pin him down better.