For me the standout magical moment is at the end of the pilot ,the trio are parting at the end of the day when Clegg delivers that wonderful line "I don't know lass, it`s a rum old world, nevertheless I think I`ll get a bit of sausage for me tea"
The pilot for me is a masterpiece that introduces us to the lives of these eccentric characters and their idyllic carefree world. Despite Blanmire`s feeling of superiority over Compo the emphasis on companionship is central to this episode and this theme is carried on all the years to follow.
As an aside I see on Wikipedia`s description of the series it refers to the trio as "essentially harmless simpletons", a very disingenuous description surely.