This 2005 show set in Minnesota in the mid-'60s, has inspired such a ravenous fandom that there are now seven related musicals in this series. The Circa '21 Dinner Playhouse has produced some of them – one just this spring. Yet somehow, I'd so far escaped these ladies' clutches. I'm here to tell you I was clutched, but good, at Thursday's opening-night performance at the Clinton Area Showboat Theatre.