Jon Gruden Joins "Monday Night Football" Crew. Seriously.Dashiell Bennett5/18/09 11:20am34EditInvite manuallyPromoteDismissUndismissBlock for deadspinHideGood news for Kornheiser haters! Tony is officially stepping down as third man in the "Monday Night Football" booth. The slightly more exciting (upsetting? baffling?) news is that Lil' Jon Gruden will take his seat.