Don't let limited space deter you from gardening. Thanks to @TreeHugger for this great article about Hydroponic gardens!
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Grow the Dirty Dozen + Foods. if space is limited, grow things that are more contaminated by pesticides.
Mr. Stacky Stacking Hydroponic Pots Tower - The Vertical Container Hydroponics Growing System to Grow Vegatables, Herbs, Strawberries, Peppers, and Much More - Indoors or Outdoors - Terra Cotta Plastic Stackable Planters - Also Used in Aquaponic Systems - Comes with Easy to Use Gardening Instructions