15. Randy Moss
Team(s): Minnesota Vikings, Oakland Raiders, New England Patriots, Tennessee Titans
Years: 1998 - 2010
He was probably the most talented wide receiver to ever set foot on a gridiron, but he routinely took plays off. He admitted as much at a 2006 press conference, saying, "My concentration and focus level tend to go down sometimes when I'm in a bad mood." After he left Oakland (and, not coincidentally scored 23 touchdowns in his first season with Tom Brady in New England), his former Raiders offensive coordinator claimed that Moss told him "I'm too old to practice on Wednesday and Thursday, but I'm not too old to play on Sunday." Granted, it does take some effort to come up with awesome excuses like that.