Shortland Street

Ive watched the odd bit of Shortland Street over the years and what astonishes me is how incredibly bad the acting is in this show and yet somehow this doesnt seem to bother the people who watch this show religously. I wondered whether perhaps part of being taken on as an actor in Shortland Street is NOT having the ability to act? I say this in all seriousness. Is part of the likeability of Shortland Street that the acting is so bad? Are actors maybe encouraged to "act badly"? Ive seen actors who have been with the show since the beginning and seen their acting in more recent years and I can honestly say that their acting ability has not changed in all the years and if anything appears to be worse, so I do wonder "is that Shortland Streets charm, that it is so bad?