I recently purchased a new Kindle book called "Trout and Flies - Getting Closer" by Peter Hayes and Don Stazicker.  The authors set out to study in detail what happens when a fish takes an insect or artificial fly.  The book is quit interesting, and has a ton of photos taken streamside, showing how fish respond.
 
I wish the book was availible in print, but for now the digital copy is quite interesting.
Has anyone else read this book?  What did you think of the observations?