It's funny, it's light and it's set on a sunny Greek island – in short, Mamma Mia is a hot classic. Bride-to-be Amanda Seyfried wants to find her father before she gets married, so she invites all three of her mum's exes to the celebration – but who’s the daddy? And more importantly, why have we never heard Colin Firth sing before? Certificate PG. There's a bar and hot food available on site, but feel free to bring a picnic. You'll probably wanna bring a blanket to sit on and something cosy to wear too. The screening will go ahead whatever the weather, so bring a waterproof jacket or a blanket. There are ponchos available to buy on site.