The Tree Hugging Hippy Juice Bar was a juice bar on Norfolk Street; sadly, it closed for good in Autumn 2008. The information below is retained for people who want to know what it used to be like.
Juice bar on Norfolk Street. Yes, it's really called that.
According to an interview with the owner on 209 radio, it opened in 2007 when the owner and his wife moved to Cambridge for her to attend the university; his background's in the bar trade.
They offer smoothies, juices, coffee, tea, and food of some kind (not sure what, though breakfast items such as muesli were mentioned in the interview). The owner says the most popular drinks are the blueberry and ginger combo; and also the pineapple, banana, orange, and lime one.