Time to hunt out your best pair of sitting-down trousers. The 17th Belfast Film Festival kicks off his week, running from Thursday 30th March to Sunday 9th April, boasting a packed programme of new cinema, both local and international, as well as special guests, live events, short films and classic screenings. There’s a lot going on, and any preview is going to be piece-meal. Ultimately, most of the fun will be encountering something totally unexpected once the lights go down. We’ve picked out a handful of screenings and events but encourage you to browse the full programme on their website. Here at The Thin Air we…