I thought the recent adaptation of Good Omens was rather fantastic (and, yes, there is something of the Crowley in Sir C ). Radio adaptation is fantastic as well - as is the one of Night Watch, which I think is my favourite.
The Four Horseman of the Apocalypse are indeed in Good Omens, joined by the Four ( Big Ted, Pigbog, Greaser and Scuzz.)
As for Sir C, I suspect he is plotting the End of Times now. I believe he is down to his last 40 bottles of wine