Beans are a great companion for many different plants, just a few are strawberries, beets (view companion planting with beets), carrots, brassicas, radish, and corn. Beans repel California beetles and they fix nitrogen in soil, which is a fertilizer that other plants depend on.
When you harvest beans you might want to keep a basket or large bucket on hand as during good seasons bean plants can grow up to 50 beans per plant.
When planting companion plants together, keep in mind that even plants that help one another in other climates, soil conditions, etc. don't always get along, as we post about companion plants, be sure to always know that each garden will vary slightly from another and what works for some may not work in your garden.
What experiences have you had in planting and/or growing beans?