For the show that was formerly called NFL GameDay, see Countdown to NFL Sunday
NFL GameDay LIVE is a show featuring highlights of NFL games. It airs on NFL TV, starting @ either 11:30 PM ET or the moment that NBC Sunday Night Football concludes, whichever is later. (When NBC does not show a game, this program begins @ 8:00 PM ET. It happened twice in 2006, on October 22nd & December 24th) NFL GameDay LIVE debuted on September 10th, 2006.
NFL TV claims that this is the only long-form highlight show about the league in the late-night slot on Sunday, although SportsChannel has extended packages on the NFL called "The Blitz" as part of SportsCenter