4 Rodney Harrison
Before he was a mediocre analyst for NBC, Harrison was a two-time Super Bowl-winning safety for the New England Patriots. But in 2007, Harrison was suspended four games without pay for using human growth hormone (HGH). The two-time Pro Bowler was also fined more than $200,000 for aggressive play during his career. Seems like a guy ready for primetime football commentary, no?
