Yeah, I've been horrified by the stories of what they put in commercial dog food... my vet told me that she had done some research that indicated that some of the food (namely, Beneful) might actually contain the corpses of euthanized animals from vet clinics and shelters. (Oh My God Yuck!!)
Anyway, my vet is a strong believer in organic/natural/unprocessed foods, and now we have my two dogs (a Maltese/Lhasa Apso mix and a Boston Terrier) on a twice-a-day diet as follows:
Brown rice or couscous (they prefer the couscous) with olive oil
Peas, carrots, asparagus, cucumbers, tomatoes (various combos)
Lean protein like eggs, lowfat beef, nonfat chicken (all organic)
Nutro dry kibble (Lamb and rice formula)
They LOVE it! My Boston has always been a "bleh" eater... he could take food or leave it. Since we started this diet, he RUNS to his food bowl, he's leaner, more energetic (which is sometimes a blessing AND a curse!), he doesn't have the bad gas problems he had before, and he's more "regular" (he's always had issues with going potty). My Lhasa/Maltese mix has never been terribly picky, but he is a huge fan of the new food, and he also is more energetic, and they BOTH sleep much better.
I tried a similar thing with my cats, but they REFUSE to eat anything but their Purina One kibble. They're very picky... they won't eat canned/wet food, and they don't have any interest in bits of meat (which is weird, for carnivores). So, that didn't go well, so I'm just keeping them on the Purina, despite my misgivings. Feeding them an organic, unprocessed diet does you no good if they're not eating it!
Anyway, good luck with the food exploration!