"Enjoyable but thin"
I did enjoy listening to this but was a little let down. I think Tina Fey and 30 Rock are the two best things on television these days. However the book is surprisingly thin on details that I would be more interested in-- related to her work at SNL or the development of 30 Rock (or even how she met her husband and what working together on the show is like). She talks about it, but not much, not about how she approaches writing, what she finds funny, how she came up with the character ideas for her show, etc. And it feels a little padded in some places with complete audio clips (printed transcripts in the book) of sketches.
Fey is extremely likable and funny, so it's definitely worth a listen--but I was hoping for a bit more.