Theodore Tugboat (found Canadian children's TV series; 1995-2001)
Theodore Tugboat is a Canadian children's television series about a tugboat named Theodore who lives in the Big Harbor with all of his friends. The show originated (and is set) in Halifax, Nova Scotia, Canada as a co-production between the CBC (Canadian Broadcasting Corporation) and the now defunct Cochran Entertainment. A total of 130 episodes were produced from 1993 to 2001. In the English version, the series is narrated by the Harbourmaster, played by the late Denny Doherty (From the Mamas and Papas) who provided all the voices for the characters.
Theodore Tugboat only had 35 episodes released on Home video in the USA and Canada. Currently, all the episodes can be watched online in an incomplete format, some being taped off of PBS Kids and BBC kids and many others being taped off of Qubo during its run from 2007 to 2009, but a portion of the Harbourmaster's segment from 'Theodore And The Big Harbour' remain lost as of November 2017.
UPDATE: 01/22/16: ttteepisodesUS has said on the Theodore Tugboat wiki that he has all of the missing episodes, recorded on VHS, it is unknown when he will release them.
UPDATE: 08/19/17: All 40 of the lost episodes have been reuploaded by various YouTubers, with Theodore And The Big Harbour and Foduck in reverse having portions of their opening Harbourmaster segments missing.
UPDATE: 11/02/17: Foduck In Reverse has been uploaded in its entirety, leaving Theodore And The Big Harbour as the only episode with any missing content.