I think a bit of Samantha got in here too...
Can't remember anything relevant from I'm Sorry I Haven't A Clue rm, but you'd think that Samantha must have tried weightlifting at some time - a Clean and Jerk followed by showing off her Snatch seems to have plenty of potential.
Is it not a wonder, though, that Colin Sell, whose rôle is to set to music some of the silly things Humph gives the teams to do, has never played a fragment of Cole Porter's
I Love You, Samantha whenever she is announced at the beginning of the show?
Anyway, to return to the topic, Schnittke has obviously been mentioned in its context and one might reasonably go so far as to suggest that quotation was often an essential tool in his compositional toolbox.
It's also important to consider why composers quote what they do when they do it and how such quotations come to enmesh themselves into the fabric of a piece; in my own case, an rationale to which I've aften had recourse (not that I quote all that frequently) is "because the music just happened to go that way at that point" - which, I hasten to assure anyone who might otherwise think that this is abit of a cop-out response, is in fact nothing of the sort...
Best,
Alistair
