Crystal Tipps and Alistair films for the Central Office of Information. The series has no dialogue but rather is accompanied by a full musical soundtrack composed by Paul Reade; however, when shown on "Captain Kangaroo" in the U.S. in the 1970s the series did have voice-over narration by Cosmo "Gus" Allegretti in his high-pitched "Mister Moose" voice. Crystal's Christmas Special was shown on 25 December 1974. Crystal Tipps and Alistair Crystal Tipps and Alistair is a British cartoon produced for the BBC. The title characters are a girl and her dog who are joined by their friends Birdie and Butterfly. There are 50 five-minute
Companion (Doctor Who) from the spin-offs when doing so, including Jack's colleagues Gwen Cooper and Ianto Jones, and Sarah Jane's 'family' Mr Smith, Luke Smith and K-9 Mark IV. Other former companions from both the classic era and revived series have also returned as guest stars in the spin-offs, including Martha Jones on "Torchwood", and Brigadier Lethbridge-Stewart and Jo Grant on "The Sarah Jane Adventures". K-9 Mark I has also been spun off into its own series, albeit with an independent continuity. When "Doctor Who" returned to television in 2005, the companion characters played a slightly different role, partly due to a strong