Cobalt Jane - I've read The Other Boleyn Girl as I read a lot of history and historical fiction. I found it interesting as I knew nothing about her, though I prefer the confusing Plantagenets to the done-to-death Tudors (no pun intended). Have you read anything by Gregory before? I find her first-person present narrative annoying, and I'm not sure she always gets her facts right, but she's a good introduction to historical characters and she certainly brings them to life.
This is my first Gregory book, and the first historical I've read about the Tudors. I'm a documentary fiend about them though.