http://en.wikipedia.org/wiki/QuinoaQuinoa has been described as a grain alternative; technically it's not a grain. It is gluten free and supposedly very easy to digest. It's also very high in protein.
When cooked properly, I would say it it has a texture similar to couscous. It has a slightly nutty taste. You can have it sweet or savoury. I like to add a little bit of cumin to mine, along with chopped tomatoes, but I've also added spinach, zucchini... the list goes on. It's good served cold as a salad, too, tossed with a little olive oil and seasoning. And it' a good substitute for oatmeal with a little brown sugar or cinnamon.
I've only started eating it within the last year myself, but already I can say I'm a fan. High in protein, doesn't leave me feeling full or gassy, and it even bulks me up. Great stuff!