Pete Wentz with fiancee Ashlee Simpson at Saturday's White House Correspondents' Association dinner. (Getty Images) Without an ill-fated, and much publicized, marriage to Britney Spears we probably would've never heard the name Kevin Federline. But his status as the quintessential hanger-on is just so 2005. In fact, over the past year he's even become tolerable when contrasted with his erratic ...