It is hard to ride quietly into the sunset when a cavalry of CEOs and television executives are in hot pursuit. We knew Kurt Warner's popularity would endure, post-retirement, but the degree of interest in the former quarterback 2 1/2 years removed from his Super Bowl appearance with the Cardinals is mind-boggling. His appearance as an analyst for tonight's ArenaBowl is one of several assignments attached to the exclusive multiyear deal he just signed with NFL Network. In December, he signed a multiyear contract to represent Nutrilite's product line of vitamin, mineral and dietary supplements. He is about to close a deal to host a "feel good" reality show, said Julie Magrane, his