I often go for the Franziskaner Weiss as well. Paulaner is also an excellent choice. Around these parts, finding either one on tap is very rare. Being from Chicago you must have access to some really good brews on tap, namely: Three Floyd's.
Also, Two Brothers Brewing and Goose Island. The Goose Island Honker's Ale is darn good. I wouldn't be surprised if Franziskaner on tap makes it out to you soon. I see it popping up all over the place lately.