Oh yes, Damian Grammaticus has long been my favourite Radio 4 name. Though I think he is on telly not radio these days isn't he.
Another favourite Radio 4 names is Jonty Bloom. I want to write a novel about Damian and Jonty. I think Damian would be a very earnest Jesuit, angsting about whether or not to perform an exorcism. Jonty would be his best friend, a very secular and lecherous intellectual, alcoholic and prone to playing practical jokes.