I go to an Italian grocery store near my house that has an aisle filled with different flavors of syrup. I know you can make Italian soda by mixing it with carbonated water but I was wondering what other things you can make with them?  
Any kind of flavoring, really, so long as the application will accept a syrup substance.  They make killer milkshakes / malts.  Add them to all kinds of desserts, beverages.  I've occasionally replaced extracts and granulated sugar in a recipe with a flavored syrup but you  have to experiment with the right combinations as this tends to either overpower the dish with flavor or not make it as sweet. 