"Bossypantastic"
As Tina Fey, herself, narrates the book, you are able to understand her point of view from the tone and inflections in her voice better than if you were to simply read it. Not only that, but listening to her voice is awesome. Also, she ads little comments that would obviously not be in the printed edition.
Tina's advice about improvisation is helpful and amusing. It is also interesting that she uses it to relate back to everyday life. Another memorable moment was her commenting on the internet feedback she receives. Very funny.
It was so funny. Continuously through the book, I was laughed very loudly. This gave me a few odd looks when I was listening to it in public on my iPod.
Tina Fey is a genius and I recommend this book to any comedy-loving reader.