Your TV impressions go in the right direction -), but both of us don't have the basis to tread them systematically. Heissig's book won't do; he treads literature well into the 40s of the 20th century, but only those kinds of literature the tradition of which began earlier. Unfortunately, (but not unexpectedly) the library of Bonn seems to contain no books that tread literature after the mid 80s. Maybe Göttingen, or I might buy something myself in late summer. Silly, that.