The Spoetzl (SP?) brewery aka the Shiner brewery used to be one of my absolute favorites. I practically lived off Shiner Bock through college as it was both cheap and delicious.
After college I discovered some of their other beers and have to say their dunkleweizen was one of the top beers for both taste and the ability to drink more than 3 or 4 in a sitting.
In the past year or so I have found that the Bock has been a little hit or miss (flat and over maltiness - kind of meeting ksBronco's description). I'm not as fond of their other beers as I used to be either and they're not producing the dunkle anymore (as far as I can tell). I don't know if they've just had some shady batches going out lately or what.