This is Colin Kaepernick of the San Francisco 49ers. Some NFL experts claim he could be the Superbowl MVP this year. Do you remember Tim Tebow? He had become a big star with the Denver Broncos and the New York Jets, due both to his improbable on-field comebacks and his strong religious beliefs. At the height of his popularity "Tebowing" was all the rage. It appears Tim's star is fading a