The Black Chancery I like, though in my eyes for other uses than e-reading; the omicron looks to me a lot like Neuropol got married to Chinyen
Good stuff if one wants to author a genre-book oneself, but as BWinmill said, rather to include it just as a heading-font. I'd say it is probably best in any eBook to leave the font family and size of body-text to the reader's choice. To see more fancy headings in eBooks I would no mind though, I also like stuff like little grafical ornaments as dividers and such...