As my first post, I probably should not admit that I bought "an inferior building block system," but I did get the Megablock castle Aanchir linked to above. At the time it was awesome as an inspiration for my other castles. Additionally I'm a big fan of Gryphons, so there was that.
I appreciate both types of builds I've seen lately on the castle MOC sites, The more realistic brick and plate castles are awesome to behold, but I'm always disturbed by their seeming lack of interiors. I personally always build functionality into my buildings, and as such the large panels are a great help for those interior walls and sub support structures, as well as the back walls where the sun doesn't always shine.
Keep up the great work everyone, and I'm glad to be out in the open here!