Hollywood actor Will Smith is saving the environment - by using "paperless" toilets. The self-confessed gadget geek has invested in several of the state-of-the-art contraptions from Japan, which cleverly eliminate the need for toilet paper by spraying the user's bottom with blasts of air and water. He explains, "It's a gift from heaven, believe me. People think it's all about suction and that they're going to have their insides removed by this marvel of modern engineering - but it doesn't suck, it blows. "Not everyone can handle this thing emotionally, so I've made sure I also have a few normal toilets in my house."