Glitz fails to save the Doctor from quicksand, only to witness the Doctor resurrect himself. But as the Doctor explains all of this a bad joke in the un-reality of the Matrix. The Valeyard appears and explains to the Doctor why he needs to destroy him. Subscribe: Classic Doctor Who clip first broadcast 06/12/1986 WATCH MORE: Regenerations: The Thirteenth Doctor: Title Sequences: Welcome to the Doctor Who Channel! Travel in the TARDIS with clips dating back to the Doctor's first incarnation in 1963, all the way through dozens of regenerations. Including behind-the-scenes footage, exclusive videos and our very own 'Doctor Who: The Fan Show' - this is the place to find all the best official clips from all the years of Doctor Who history. Want to share your views with the team and win prizes? Join our fan panel:
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