Not a big PBR drinker, but I did happen to go on the brewery tour last weekend. Everyone always raves about the Lakefront brewery tour, but the Pabst tour is much more impressive.
Funny how lakefront is the tour for the masses, and Pabst is the tour that has amazing complexity and depth.
<tangent>At lakefront, they charge $4 for a beer in a small plastic cup brewed 100 ft away. WTF?</tangent>