Defunctland

Defunctland is a documentary series about defunct theme park rides. There are currently 3 seasons, with seasons 1 and 2 currently finished. 
Season 3 currently has 2 episodes. Sixty-six episodes are planned, with 46 past episodes and 20 planned episodes. 
There is also a spin-off called "DefunctTV" with a few episodes. They also have a Jim Henson miniseries.