I always thought that bok choy was an underrated vegetable. If you can find it in the market (no longer strictly an ethnic vegetable, more supermarkets carry it nowadays), it might be a good addition to the juicer menu.

Ingredients:

1/4 lb of bok choy vegetable
3 carrots
2 apples, sweet if possible
1 bell pepper, red preferred

Directions:

I would do the apples and carrots together first so that you can reserve that pulp for other things. Then juice the Bok Choy, and finally the red bell pepper. Stir all ingredients together. This makes about 2 cups or so of juice.