DW 03-07: 42

A Guide to Classic Who references (and other references) in new Who.

Doctor Who Series 3 episode 8 (Story 28):  The Doctor takes Martha Jones answer a distress call.

Warning: May contain Spoilers for 

"42"

Viewing Order

• Children in Need - "Born Again" or Christmas Special 2005 - "The Christmas Invasion" (Suggested viewing - reintroduction of character.)
• Doctor Who [3-01] - "Smith & Jones" (Suggested viewing - introduction of character.)

References

[OLD] - Things that first appeared in the classic series (or the film.)  Episode List.

For context, the following are also covered:
[1ST] -  The first appearance of things in Doctor Who series.
[NEW] - Things that first appeared previously in the new series.

Ongoing References...

• [OLD]  Sonic Screwdriver - The Doctor's favourite tool.  First appeared in "Fury of the Deep" (Season 5) and has been used off and on by various Doctor including the Ninth.
• [OLD]  The Doctor - The main character.  Real name: unknown; actual age: unclear.  Status as a Medical Doctor:  Undetermined.  He is a Time Lord from the Planet Gallifrey.
• [OLD]  The TARDIS - The Doctor's time and space travel vechicle.  TARDIS stands for Time And Relative Dimension(s) In Space.  Like a lot of Time Lord technology it is "bigger on the inside."  The Doctor stole his Tardis when fleeing Gallifrey.  It is an older model ("Type 40") and unreliable, often ending up in the wrong location and the chamleon circuit - designed to make the Tardis appear inconspicuous in any surroundings it appears has failed so it always appears as a police telephone box from 1960s England.

This episode...

• [NEW] Universal roaming - Which he previously gave Rose in "The End of the World."

• [1ST]  The Torajii system - First reference to this planetary system.

• [1ST]  Energy scoop - First appearance of this fusion engine energy source.

• [NEW]  Deadlock Seal - Previously appeared in "Bad Wolf" (series 1) and "School Reunion" (Series 2) as reasons the Doctor couldn't use his sonic to open a door.  A similar event occurred in "The Invasion of Time" (Season 15) but no explanation was given.

• [1ST]  Living sun - First appearance of a sentient star, but the unnamed planet in "Survival" (Season 26) had some form of sentience.

• [OLD]  Extreme cold - In "The Space Museum" (Season 2) the First Doctor was subjected to a device that had killed everyone else it was used on.  All the cold did to the Doctor was cause his rheumatism to flare-up.

~ DUG.

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The Time Crash blog was created to help New Who fans understand Classic Who references - and to know if something isn't a reference but a new idea.  If there's a reference I missed or a subject that you feel needs more explaining, please comment.