My favorite green smoothie of all time is the Glowing Green Smoothie that Kimberly Snyder makes. It is packed with greens and it tastes absolutely delicious. I have been swearing by this recipe for several years now. It's a great staple.
I always add the cilantro and parsley, it adds great flavor and those are two herbs that I definitely don't eat enough of on a regular basis. They're super cleansing!!
I drink this every day and it really helps me to stay energized. Plus it's just an added bonus that once I have this I don't have to worry about my greens for the rest of the day. ;)
Also you can add whatever extras you want to it, although I recommend trying it this way because of its wonderful flavor. I usually like to add a little bit of pineapple to it as well for additional sweetness. :)
I hope you ENJOY!
You can find the recipe and additional information on Kimberly Snyder's Blog: http://kimberlysnyder.com/blog/ggs/