Guillaume Canet stars in Nicholas Bedos’sLa Belle Epoque, a sharp, accomplished, highly commercial French farce. Harking back to major Gaellic productions from the past—which are rarely made these days--it looks set to be a resounding international hit. Although screening out of competition La Belle Epoque is one of the best films at the Cannes Film Festival. Canet plays a director who has set up a company allowing clients to venture back into their favourite time period which he re-creates immaculately in the manner that the French do so well. Or like Woody Allen achieved in Midnight …