Alec Baldwin

Alec Baldwin made the switch to veganism primarily for health purposes, when he was diagnosed as pre-diabetic in May 2011. But the 30 Rock actor began his transition to a meatless lifestyle many years before when he was a pre-teen, because of his rural upbringing. "We do have cows and I did bottle feed them and stuff like that. They were like my pets," he said. "I had an incident one day that made me refuse to eat beef ever, ever again. Later on, my neighbor had pigs, and I thought they were cute, and it just kind of went on and on from there. I phased it out over a period of time."