Sadly the whole here is not greater than the sum of the parts - and heaven only knows there are enough parts in this rather lacklustre theatrical-based comedy. Disillusioned thespian "Tony" (Sir Michael Caine) is treading the boards every evening playing the Nazi variation of Shakespeare's "Richard III" to an audience who were either doing a school project, or who just wanted to keep warm. One night he and one of his on-stage minions "Tom" (Dylan Moran) concoct a plan that could see them fleece a local gangster "Barreller" (Sir Michael Gambon) of a small fortune then play him and his…