Green Smoothies

I am planning to start up my green smoothie regimen again (hoping to get a juicer though, so its less... chunky).

I recently found this recipe from Dr. Oz (ala the Oprah Show).

1/2 lemon

1 lime

1 bunch parsley

1 head celery

2 cups spinach

1/2 inch peeled ginger

2 cups cucumber or 1 medium cucumber

2 apples

Do you have any favorite green smoothie recipes? I like sweet, and will probably add juice of some kind (orange, pineapple, etc) to help even things out a bit for me.