I love Jamba Juice, and I was so happy to discover this little smoothie store while shopping in U Village. The thing that sets Jamba Juice apart from other smoothie places is that they use whole fruits. Yes, they're frozen, but it is a whole lot better than getting some sugared and processed wanna-be fruit that some other places use.
The Caribbean Passion, and Berry Lime Sublime (or something like that) are my favorites. There is also another Jamba inside of Whole Foods.