Self-seriousness is a common trait in the world of European cinema, but the opening night of the 57thKarlovy Vary International Film Festival was a wholly playful affair, starting with the most unexpected sight of a troupe of acrobatic ice-skating showgirls spinning and whirling through fake snow and dry ice. MC Marek Eben followed in a similarly feelgood vein, with a dryly witty monologue that touched on current affairs in the Czech Republic and the wider world without getting too heavily into the politics. A “surprise” appearance by festival stalwart Jiří Bartoška, whose attendance was initially in doubt, occasioned the first standing ovation of the night.