Npower: “Wallace and Gromit” [00:30]# Wallace is having a shower and complaining because he can’t get the water temperature right. Gromit, meanwhile, is shoveling coal into the furnace in the cellar. Despairing, Gromit calls npower, and at that very moment Bob appears in the hall. Quick as a flash, he installs a boiler enabling Wallace to enjoy showers for hours on end. And not only that – the energy-friendly water-heater also helps to save up to £200 a year.