 The rowdy, improvisational atmosphere around the filming, created by  Harold Ramis (qv), Bill Murray (I) (qv), Chevy Chase (qv), and  Rodney Dangerfield (qv), didnt sit well with all the members of  the cast. Ted Knight (I) (qv), widely regarded as a very nice man,  got fed up with the constant shenanigans. Initially, Murrays and  Dangerfields role were to be cameo appearances. But their deft  improvising caused their roles to be expanded much to the chagrin of  Scott Colomby (qv) and some of the other cast members whose roles  were reduced as a result.