Roots: It's a Wonderful Life, Groundhog Day (repeating events, Puxatawnee). Back to the Future. Star Wars IV ('You're our only hope', 'This is our new hope') Mel refers to Edger Allan Poe, Doris Day, Lowery, Theseus and Bing Crosby. Capra sings varients of 'God Rest Ye Merry Gentlemen' and 'Good King Wenceslas'. The word Slithergee is not too dissimilar to Harry Potter's Slitherin - and there is a character called Potter! 1984 (Hate crimes)
Intertextuality: Could the casting of one-time Time Lord and stage Doctor Who Trevor Martin as the inventor of a time machine be more than a coincidence?
Goofs: An unavoidable consequence of this storyline is that the 'wrong' Doctor and Mel return to the 'wrong' adventure on the Pinto - the one experienced by their counterparts and vice versa!
Dialogue Triumphs: "Computers and flashing lights, this must be it."
"He said he'd killed us. I take offence at that sort of thing."
"The city?" "You're getting warmer. In fact, we both are."
Dialogue Disasters: "I want you to give me my Christmas present."
Continuity: In 3060, the Slithergees came to the planet Puxatornee and demanded to be given a moon to live on.
The Promixa Century All Blacks did the double in 3012. Pratifoon Wabster had their first number one in the year 3012.
Puxatawnee is the only planet in the galaxy on which leptonite crystals can be found. Quarks, who had taken over the space yacht Pinto, tend to explode in the presence of leptonite crystals.
Slithergee houses resemble huge honeycombs. While blind, Slithergees have an excellent sense of smell.
Mel appears to be in her 20s and the Doctor in his 40s.
The Doctor hasn't encountered the Slithergees before.
Location: Puxatawnee, 24 and 25 December 3060 and 3090.
Links: 'The Dominators' (Quarks). 'The Daleks'(anti-radiation gloves) Cloister Bell ('Logopolis', 'Castrovalva'). 'When I say run, run.' (yay!)
Untelevised Adventures: The Doctor was on Puxatawnee in 3012. The Doctor and Mel fought the Quarks on the space yacht Pinto. The Doctor starts to tell about a history-changing event that took place in 1612.
Bottom Line: "We'd better pay close attention, or we'd be completely bewildered."
A clever and yet - surprisingly! - not too confusing use of time travel, parallel universes and crossed timestreams. You'll probably need more than a single listen through (and not necessarily in the same order each time) to get this sorted out fully. Although it does help to draw a flow diagram as you listen to help make it make sense! Considering this is about parallel universes and two versions of everyone, the placement of this story in the midst of the Unbounds is rather eerie...