Did you know that Jackass star, Steve-O is vegan? (He also bared all for PETA's 'I'd Rather Go Naked Than Wear Fur' campaigns). So why has the self-proclaimed "professional idiot" embraced a plant-based diet?He tells PETA: "I got into being vegan because I was simply looking to benefit from being more compassionate. I have since come to learn that it is an animal-based diet that is responsible for the overwhelming majority of cases of cancer, heart disease, diabetes, obesity, multiple sclerosis, and all kinds of other problems." Sounds pretty smart to me!