sourdough starter - other uses?

You can really use your sourdough starter in just about every bake that you generally would bake with just yeast. I have recently bought James Morton's 'Brilliant Bread' and the book includes recipes for Bagels, Croissant Dough, Challah, Baguettes, Brioche, Doughnuts, Hot Cross Buns, Panettone and lots of other things using sourdough starter. Every recipe I have attempted has come out brilliantly (as the name of the book suggests, after all). If you really want to 'get into' sourdough baking, I wholeheartedly recommend this book!

Those waffles sound amazing! I will research pizza dough too - thanks!!!

Sourdough pancakes and waffles are great! This recipe for waffles looks promising:
http://www.savesourdough.com/sourdough-sweets-waffles-and-pancakes/

You can also make excellent pizza dough with it.

Also, the Tartine bread cookbook has recipes for things like brioche and kugelhopf made with a natural leaven.