Glen-Warren Productions, Limited is the Toronto production studio where Jim Henson's film The Cube and television special The Muppets: A Celebration of 30 Years were both shot.

A sister company of CFTO, the CTV television network's Toronto affiliate (and housed in the same facility, 9 Channel Nine Court), it was host to Canadian sci-fi series The Starlost, iconic Canadian dog-saves-random-person-and-moves-on-series The Littlest Hobo, Martin Sheen film Taxi!!!, the 1973 Hallmark Hall of Fame production of The Borrowers, and local productions of The Nutcracker and The Nutcracker: A Fantasy on Ice.

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