Jennifer Homans, dance critic for The New Republic and former dancer with San Fransisco Ballet and Pacific Northwest Ballet, has written a book on the history of ballet that's receiving lots of acclaim and buzz. The title of the book is Apollo's Angels.
http://www.nytimes.com/2010/11/28/books/review/Bentley-t.html?_r=1&ref=review
http://www.nytimes.com/2010/11/21/arts/dance/21homans.html

