John Cena broke in on the ground floor of professional wrestling, and before he was through, he took it to the mat. The West Newbury, MA, native and college football star (he was an All-American center at Division III Springfield College) made his WWE debut in 2002, and eventually made his bones with moves like the F.U. and Five-Knuckle Shuffle and raucous catch phrases like "You Can't See Me!" and "If You Want Some, Come Get Some!" He also built a reputation with his firebrand freestyle raps, and that led to a second career as an MC. In April 2005 Cena seized the WWE Champion...