At that crazy BEA book expo I met some very cool people like Marc Tyler Nobleman. His book, "Boys of Steel" is a wonderful look at the origin of Superman. And not from the loins of Jor-El, but the typewriter and ink pen of Jerry Siegel and Joe Shuster. Illustrated by Ross MacDonald (I LOVE how he draws shoes, just saying, and Nobleman is a great storyteller.)
At BEA I did not meet Don Brown. If I had, I might have swooned. To me, his picture book biographies can do no wrong. Check out his latest, "A Wizard from the Start" about Thomas Edison.
A book many adults, including myself, could use on a daily basis: "For Good Measure" by Ken Robbins.