I went last night, as I often do on a Tuesday, to a gathering that is rapidly gaining a reputation as a North London institution - the Tufnell Park Film Club.  We sit in the upstairs room of the Lord Palmerston and watch a film, selected with the help of our two viddymasters, Nigel and Wayne. Last night's film was Autumn Sonata, Ingrid Bergman's last film, directed by her namesake Ingmar.  On the way there my friend Mark wondered just how bleak the film was going to be.  I had seen it some time ago, so risked an answer - wrongly so.  Seduced by the title, and the colouring of…