This week, we conclude the two-part finale to David Tennant’s first season as the Doctor with the 2006 episode DOOMSDAY.  This is the big one:  Daleks vs Cybermen for the first time in Doctor Who history…a sequel to the parallel worlds storyline from earlier in the season…a conclusion to the story of Rose’s father, started back in the 9th Doctor era…and finally, the goodbye to Rose herself.  This was Doctor Who’s first boundary-shattering zeitgeist moment of the 21st century, and it’s still burned into fandom’s collective memory after all this time.  Join us this week to re-live this seminal moment.