Raw meat, raw meat on bones, organ meats, certain fish is about all you need, 2-3% of the dog's body weight per day (adjust up and down depending on his/her activity level to avoid underweight/overweight). There is a good Yahoo Group Raw Meaty Bones that has an extensive files section for reference and lots of people happy to post to help newbies. Part of the fun is shopping for bargoons. No more expensive than a quality commercial food but with tons of benefits: about 1/3 the "cleanup" with reduced odour and won't stick to your shoe, no doggie breath, nice skin and coat, prevents allergies/hot spots, ear infections, pancreatities, diabetes, periodontal disease, impacted anal glands. If more people only knew... All of this robust health means WAY reduced vet bills.
There's an amazing essay on the web by a Harvard student called "Why confused pet owners are feeding their dogs krispy kremes and ring dings" that details the whole commercial food fiasco and why people are best to steer clear of manufactured dog food.
Raw feeding for 3 years now. The dog loves it, I love it, she's happy, I'm happy. No more ear infections, goopy eyes, runny nose, itchy skin...