I think Bradbury's success, like Moore's or Gaiman's, is his ability to excel in a variety of genres seemingly effortlessly. He can completely turn on the creepy and horrid like this, or be incisive and heartwarming enough to be adapted into a children's play like this. It probably comes of his habit of never going a day without writing. Were it not a wee bit pretentious, I'd call him the American Shakespeare or H.G. Wells.
What's your favourite Ray story? Off the top of my head, I'd mention my all-time favourite, A Sound Of Thunder, along with The Veldt, Doodad, And The Moon Be Still As Bright, Way Up In The Air & its sequel, The Other Foot, The Inspired Chicken Motel, The Day It Rained Forever, Any Friend Of Nicholas Nickleby's Is A Friend Of Mine, The Town Where No-One Got Off, Here There Be Tygers, and my other all-time favourite, Dark They Were And Golden-Eyed.