Related:

• Gosh that takes me back... or is it forward? That's the trouble with time travel, you never can tell.
  -- Doctor Who "Androids of Tara...
• Gosh that takes me back... or is it forward? That's the trouble with time travel, you never can tell.
  -- Doctor Who -- Doctor Who, The Androids of Tara...
• Gosh that takes me back ... or forward. That's the trouble with time travel, you never can tell.
  -- Dr. Who...
• Grendel! [You forgot your hat!] -- Doctor, Androids of Tara
• Uh, Count, far be it from me to query this lady's competence as a doctor, but where I come from, you don't cut off a patient's head if you wish to cure their ankle.
  -- Romana, Androids of Tara...
• Lisa: [annoyed] Dad! Homer: Yes, sweetheart? Lisa
  Obesity is really unhealthy; any doctor will tell you that....
• Tell me Doctor, where are we goin' this time?
• Captain, how soon can we land?" "I can't tell." "You can tell me; I'm a doctor." -- Airplane!