Possible Clues:

• Unimaginative man might sit here, hopelessly, with pile of blank paper
• Normal electricity supply runs into working unit
• Conventional mother at home with awkward master
• Normal or conventional ideas
• Mister, a man surprisingly normal
• Conventional source of water and power involving river
• Regular international among male side gaining runs
• Standard electricity supplier: a meter's faulty without energy
• Conventional way to greet Queen — ER isn't mad to be hugged!
• Normal 'mister', a man out of the ordinary?