That would be Robert Wadlow, the world's tallest man, unless you know your Bible. This guy was an inch shorter than Goliath (8 feet 11 inches). By the time he was five years old he was taller than his grandma. If you're thinking how awesome it would be to be this tall, think again. He wore shoe size 37 and these ones cost a hundred bucks a pair. His body was so big it couldn't support itself (basically) so he died at age 22.
While we're on the subject of big, here's a big gummy bear: