Jamba Juice is such a ripoff, this site has a bunch of recipes for making their smoothies for free.

In this page are many recipes and tips on how to make god smoothies from home with just a blender and fresh fruit.

Jamba Juice is a high-end chain of smoothie restaurants headquartered in Emeryville, California with over 700 locations operating in 21 states, the District of Columbia and the Bahamas. Over 500 locations are company-owned, with the remainder being franchised. For the 12 months ending January 10, 2006, system wide sales were $345 million, which included sales of $230 million from company locations. The company has achieved a compound annual growth rate of 20% per year over the last three fiscal years.