Yah. I'm a huge Peter Cook fan although I don't like everything he did; I'm in the minority, but some of the stuff he did in the 90s were some of his best because they were improvised and pure: Cook & Co, the stuff on Clive Anderson and the stuff with Chris Morris. I think Dud was always in his shadow, but an excellent actor and musician. Arthur has been remade loads of times under different names (i.e. same premise) as has 10, but nobody could match his charisma and you genuinely believe he could pull Bo Derek in real life, could you say the same about Russel Brand, he couldn't even keep Katy Perry in line.
I remember being very shocked and almost saddened when at around age 16, my friend bought the 1st Derek & Clive album, played it and it was full of swearing. I had fond memories of Pete & Dud on the BBC in the 60s and early 70s. But took me a while to realise otherwise. Like you say, some of the stuff on there was comic genius, improvised and pure...pretty well just train of thought. You could imagine this is how they would've written stuff together, they'd share a bottle of wine (or three) and just shoot ideas around. And then normally, have to refine, take out all the bad language and make it suitable for Auntie. But in a way, this was the raw material, and all the more exciting for it.
Pete was loved both inside and outside of the business, he was a complete rogue, famous for his drinking escapades and intellectual brilliance.
Moore was actually a very fine jazz musician who could've made a very good, 'serious' career out of that alone, had he put his mind to it.
Put the two together, and dynamite! The sheer, giggling almost-schoolboy glee they generated is a sheer delight.
And yes, he could've pulled Bo Derek. I can't remember, did he have an affair with her? In any case, he did have affairs with many gorgeous, internationally famous women, all rather taller than him. All the guys were thinking:
how the fuck does he do that? 
Compare that with Brand, a classless (I do mean that in the nasty sense), brash, untalented twat who thinks he knows about politics and has a very high opinion of himself (completely unjustified). You only have to remember back to that episode of he and Jonathan Ross on his BBC Radio show all those years ago, leaving disgusting messages on Andrew Sachs' answerphone about his daughter. Imbecile.
