doing the filing clerk thing ... took me ages to work this out :-)...

1. Bob the dog - ISIHAC Theme
2. Chalky - Coronation Street
3. HB - Some Mothers Do 'Ave 'Em
4. Raak - Thunderbirds
5. Kim - The Archers' Theme
6. Rab - Roobard and Custard
7. Bob the dog - Pomp and Curcumstance, Edward Elgar
8. Lib - Blind Date
9. ZK - Dangermouse
10. penelope - Blue Peter
11. Watty - Porridge
12. Kim - Tom & Jerry [Fred Quimby version]
13. Herr Bratsche - Monty Python
14. Raak - Star Trek
15. Bob the dog - Dr Who
16. rab - Have I got News for You
17. Darren - Bergerac
18. Chalky - ??

Does that mean that there is really only one outstanding tune to guess? It seems to me it might be an idea to keep Chalky in the "hotseat" until it's guessed and then have just one at a time, like AVM. Otherwise it will be sheer cacophany.

[B'master] We may have agreed that a maximum of 2 'on the go' is acceptable, in which case it's only fair that rab or Darren can post a new toon being as how they are the latest correct guessers.
A clue to No 18 - I've attempted the main [and most recognisable] theme of my 70s TV show - there *is* an introductory bit if anyone needs more ...

No need - it's The Good Life.

[rab] erm ... no. I'm now thinking I haven't done it very well.

OK then... it didn't quite fit!

OK...
plink plingyplink, plink plingyplink
dada daa-daa-daa-daa daa-daa-daa-daaaa
daa-da-daaaaaaa
dada daaa, da-daa, da-daa, da-daa
da daa-da-daaaaaaa
dadada-daa-da-daa da-daa daa-daa
didididi-dee dee-deeeee-deeeee
dididi dee di-dee di-dee da daa-da-daa
da daaaaaa-daaaaa-daaaaaaaaaaaaaaaaa
hahahahahaha!