A G.I. Joe-inspired bank robbery, murder by JCB digger toy, the line, “I hate you and I hate this bed, which was probably made in China!” Looking at some of its ingredients, Momentum should be a dark action-comedy; it is not. Po-faced and preposterous, this cheapie South African crime thriller has a first-draft script and first-take acting, with its three leads — Olga Kurylenko, James Purefoy, Morgan Freeman — all capable of much better. If it were edited as a spoof of schlock on sale at Asda till points, it could work as a bargain- basement Crank. As it stands, it’s one of the worst films you won’t see in 2015.