My personal favorite is Three Apple Cores Down Under or the Great Toilet Adventure on January 27, 2010.)
I have another favorite blog that all writers (and everyone else) will benefit from. If you have a medical question (for real or for your book), you can get it answered on Medical Mondays with Dr. Lydia Kang! Her blog is:
She's also a writer and has great posts, as well as a contest running right now. Check it out and best of luck!