The on-screen comments between American Idol host Ryan Seacrest and judge Simon Cowell produce varying reactions from fans - amusement, annoyance, entertainment. Some think the badboy judge and the laid-back host take their personal zingers a little too far, and the show’s producers have even been known to ask the pair to dial it down. But at the end of the day, Cowell and Seacrest don’t hate each other - and it all makes for stellar reality TV.