Assignment Construct is a (relatively) new site written by pro photographer John Harrington. John is shooting corporate (but also artistic) and in his assignment blog he shares the details of his various assignments.
What I like about this blog, is that it reveals the rational behind the decisions John takes. This approach is way better then just describing a photo shoot, since it enables you to make a choice is a decision taken at one place on one will work (or at least worth a shot) in another place on another time.
In case you’ve missed it, here is the link again.