I'm already enjoying the Beeb's 250th anniversary Blake-a-thon (is that how you spell 'Blake-a-thon'?). There's stuff on all the networks. The best so far has been this half hour on Radio 4 in which Jenny Uglow asserts Blake's radicalism. She's worried that these days everyone thinks he was either a sentimental English patriot (mostly because of 'Jerusalem') or a fruitcake (mostly because of the angels in the trees and the mad engravings).
Tom Paulin, Iain Sinclair and Peter Ackroyd are on hand to back her up, the historical context is fascinating and there's obviously plenty of marvelous poetry from the old fruitcake (sorry). MP3.