These types of conversation always make me think of this:
EXT. PARK. DAY
Seen through the telescopic sight of an air rifle that wanders over various potential targets (children, pensioners, couples, gardeners, etc.).
SICK BOY
It's certainly a phenomenon in all walks of life.
RENTON
What do you mean?
SICK BOY
Well, at one time, you've got it, and then you lose it, and it's gone for ever. All walks of life: George Best, for example, had it and lost it, or David Bowie, or Lou Reed -
RENTON
Some of his solo stuff's not bad.
SICK BOY
No, it's not bad, but it's not great either, is it? And in your heart you kind of know that although it sounds all right, it's actually just shite.
RENTON
So who else?
SICK BOY
Charlie Nicholas, David Niven, Malcolm McLaren, Elvis Presley. -
RENTON
OK, OK, so what's the point you're trying to make?