I love reading TechNet Magazine. They always have a host of timely and well-written articles in every issue. And as much as I try to go "paperless" having a printed magazine comes in handy when in an airport or when I have to spend extended amounts of time in "my office." On occasion they will have some bonus posters or materials included in each issue. My all time favorite is now available from Microsoft Downloads as a .pdf file. It loses some of its impact and grandeur not being in poster form, but IMO it is a goodie nonetheless.
TechNet Magazine Active Directory Component Jigsaw Poster