Extreme athlete Alain Robert, also known as the "French Spiderman," has been climbing the tallest buildings on the planet for over 25 years with his bare hands. So when the construction of the world's tallest tower, Burj Khalifa in Dubai, was completed, he set his sights on the challenge. Can Robert climb the 828-meter tower? Like a character out of the Tick, is he destined for superhero status?