Amanda Kate's idea:
At some stage, maybe in Italy, Dawn becomes obsessed with the number '27'. She sees the number on road signs (27 kilometres to …) Unnervingly Ian suggests they fill up with petrol at the stage when they have exactly '27' kilometres to go until they run out of petrol. On restaurant menus (her chosen pizza, quattro formagio, is listed as number 27). she makes out the number '27' on a bunch of freckles on her arms; and one morning - hotel room - Ian freaks as she has the number '27' written on her forehead and a there is a black eyeliner pencil without its top on her bedside table.
What if the number was 28? This would lead to pointless but understandable speculation between Dawn and Ian that perhaps there's another sibling they didn't know about. Or maybe one of the siblings is twins. If this is the case I'd be overjoyed to see someone faint at the sight of identical twins. It's got to be a gag due for a revival.
I was also thinking of the following running gag being part of it:
DAWN is filmed walking along a row of lockers (at a train station or somewhere).
They're all numbered sequentially and she stops at locker 27.
See 27. There it is again. Uncanny.
DAWN tries the locker. It swings open. She peers inside.
DAWN is driving along a highway. She looks down repeatedly at the dashboard speedo.
Is there a problem with the car, Dawn?
Shush. 26…. There 6, 027 miles. Film outside the car, Jonti. This place is special.
JONTI films outside. It's not special at all.
DAWN and IAN are waiting before setting off somewhere.
DAWN looks at her watch.
There. 27 minutes past. Now we can go.
Isn't this getting a bit much?
I know! So many coincidences. It's like the number 27 is now looking for us! We can't avoid it.
It is weird. For example, how fast are we going right now, Dawn? Exactly?
DAWN (looking at speedo)
DAWN touches the brakes.
Seen any 27s recently, Ian?
I think, like all miracles, if you examine it closely, it evaporates. That's what makes them so special. So believable. For a while every number was 27. But that's not going to last forever, is it?
There are lots of other numbers.
And they may be significant. But not to us. Or maybe to us, but in ways we can't comprehend. Who was it who said, if we could understand the universe, our heads wouldn't fit in it. They'd be too big.
No. Johnny Ball.
There's a 9. a 313. 62. 4. 25. 7. 2.
IAN continues calling out random numbers he sees.
Numbers are like a code. They mean something but only occasionally are we allowed to know what. Johnny Ball was right.
Didn't he do Think of A Number on the telly?
Exactly. Still think it's a coincidence, Jonti?