This weekend I finished Dale C. Allison, Jr.'s Constructing Jesus: Memory, Imagination, and History (Grand Rapids: Baker Academic, 2010). It's a big book (588 pages if you include all the back material; 462 if you ignore the bibliography and indexes) and thoroughly documented. Allison focuses upon doing the historian's task with a nod to social memory theory. Instead of attempting to isolate and authenticate the historicity of this or that part of the broader Jesus-Tradition he focuses instead on reoccuring themes that emerge from the overarching Jesus-Tradition. I found his approach to be satisfying and honest. I have no doubt that it is currently my favorite "big book" on the historical/historian's Jesus. How it is not be when this is the book's final paragraph:
So, then, what is my favorite small book on the subject? That's easy. It's Anthony Le Donne's Historical Jesus: What Can We Know and How Can We Know It? I wrote about it on my old blblioblog back in 2012.