I really love this window farm project first developed in New York. Due to the lack of space for growing your own herbs and vegies in urban environments, they thought up a plan to utilise the window space.
The project encourages you to think up new ideas and designs that fit your space and share with the on-line community, with members all over the world.
There are how-to manuals available to download on their website Here
I have a great backyard so I can grow my vegies the old fashioned way but just in case I ever get stuck in an apartment I'm glad to know I have options!