Neil Gaiman's particular specialty is putting a new twist onto familiar characters. In the case of 1602, the Marvel canon of characters is transported into Elizabethan England.
It was a fast read and it was a good read. I've loved Neverwhere, and liked American Gods and a couple of his short stories (namely A Study in Emerald and The Truth is a Cave in the Mountains). I also once stood for hours in line to hear him read. I didn't quite make it to having my book signed. Oh, and I constantly check his blog.