I enjoyed Obsidian Age as well, but that speech from Bruce to Kyle about his father? Gives me chills. Perfect piece of writing, and when you think about why Bruce is doing what he's doing, it's just the most wonderful little moment.
The fact his father *was* a doctor doesn't seem to get touched on a lot. I haven't exactly been following Bat-continuity lately, but I can't remember seeing any other author reference or acknowledge *that* part of Bruce's father, in anything. I really liked it here.