I think that between them, Bill Drummond and Julian Cope are perhaps two of the most interesting characters in British popular music of the last 50 years. Not that there has been much competition in that regard for the last 20 or 30.
Cope is also a respected amateur historian of neolithic sites in Britain and Europe, so those ley line escapades weren't just drug-crazed pranksterism.
One of my history teachers at school, 'Squishy' Jones was very into ley lines and neolithic stone circles as well. I never asked him his thoughts on The Teardrop Explodes and Cope's later solo work, however.
Julian Cope would almost certainly be on my list for one of those 'celebrities you'd invite to a dinner party' things.