Again, another one I've lost interest in - I've got a complete grid, I've done the highlighting (by a fluke), and I'm relieved rather than fulfilled. I'm stuck on a couple of the normally-clued entries - I've got 15ac as Jim Broadbrent, and I've got no idea about 27d, unless he's a chocolate'n'nougat-covered peanut. Please help me end another unsatisfying ordeal.