Through the Looking Glass (Lost) series would conclude 48 episodes after "Through the Looking Glass", they felt comfortable playing flashforwards as early as the third-season finale. Post-production wrapped on May 21, 2007, only two days before it aired on television. The score was composed by series musician Michael Giacchino, while popular music was also featured throughout the episode. Charlie also sings a song in the episode that was written by Dominic Monaghan, who plays him. A "Lost" season finale is approximately twice as long the average "Lost" episode. Due to the episode's length, it was split into two parts in some countries and when released
Land of the Lost (1974 TV series) Land of the Lost (1974 TV series) Land of the Lost (1974–1976) is a children's adventure television series created (though uncredited) by David Gerrold and produced by Sid and Marty Krofft, who co-developed the series with Allan Foshko. During its original run, it was broadcast on the NBC television network. It later aired in daily syndication from 1978 to 1985 as part of the "Krofft Superstars" package. In 1985, it returned to late Saturday mornings on CBS as a replacement for the canceled "Pryor's Place" - also a Krofft production, followed by another brief return to CBS in the Summer