Producer Judy Craymer had a brilliant idea for a theatre musical: use the songs of Abba for a jukebox production, wrapped into a story written by Catherine Johnson. And then she hired Phyllida Lloyd to direct it and it became a huge global hit – and then Lloyd got to do the film version too. Amanda Seyfried is Sophie, the twenty-year old daughter of hippie single mom Meryl Streep who’s brought her up in splendid desolation on a Greek island in a rundown hotel. She’s engaged to be married to Sky (Dominic Cooper) and when she finds her mother’s diary realises her father could be one of three men – Planned Parenthood not being a priority round these parts. So she invites all three candidates to the nuptials without telling Meryl, who’s bringing her own besties, Julie Walters and Christine Baranski: the potential dads are Pierce Brosnan, Colin Firth and Stellan Skarsgard. The Rule of Three is used a lot in this film of Greek choruses. Sophie figures she’ll know her father when she sees him. She doesn’t. There’s intrigue, slapstick, group choreographed singalongs and then everyone begins to twig what Sophie has done.There’s a showdown in front of the Irish priest at the wedding. Everybody sings, the men are notably terrible. It’s awfully badly made. It’s camp as a caravan site and tasteless in the extreme. It’s a truly, truly terrible film. It’s also one of the most enjoyable you’ll ever experience and definitely the best karaoke session you’ll ever have. And you ain’t seen nothin’ till you see some of the finest actors on the planet disgrace themselves discoing during the end credits sequence. Inexplicable.