Building great characters through research

Research often gets a bad rap in fiction-writing circles. Everyone seems to know at least one aspiring author who got lost on the Planet Library, having followed one interesting tidbit after another deep into the stacks, never to return. Never to actually turn the acquired knowledge into a story.

No one wants to become that guy.

One the other extreme, some consider doing any research a waste of time, since fiction is supposed to be "all make believe." But make believe that doesn't have som...