I’ve periodically had back pain and stiffness stemming from a lower back injury sustained many years ago.
When my back goes out, I take it easy and use pain medication, and the pain and soreness go away within days to a week or so. Obviously, not seeing a chiropractor is the key to my recovery. 
Studies show that chiropractic is about as effective as massage and other forms of physical therapy for back pain. Some will get relief better with manipulation, others not.
What should be avoided, as previously noted here, are chiros who use machines that they claim will do all sorts of wondrous things (the promotion of useless gadgets has long been a part of chiropractic quackery). Also, claims that manipulating the spine will help with allergies, infant colic, and various other physical complaints that have zero to do with spinal alignment and spinal nerves should be viewed as quackery. And stay away from chiros who do forceful neck cracking (which can damage the vertebral artery and cause strokes).
Here’s some good advice about what you should expect a chiropractor may be able to do for you.
*"If you decide to consult a chiropractor, try to find one whose practice is limited to conservative treatment of musculoskeletal problems. Ask your family doctor for the names of chiropractors who fit this description and who appear to be competent and trustworthy. If your doctor cannot provide a name, ask other people and, if they recommend one, be sure to ask what conditions the chiropractor treats. If the chiropractor claims to treat infections or a wide range of other diseases, look elsewhere. But don’t depend upon the Yellow Pages. You should avoid chiropractors who make extravagant claims or who advertise extensively.
When you have selected a chiropractor, go for a consultation or conduct a telephone interview to find out how he or she practices. If the chiropractor treats infants, offers spinal adjustments as a treatment for visceral disease or infection or as a method of preventing ill health, requires that every patient be x-rayed, or requires payments in advance for a long course of treatments, call another chiropractor."*
[QUOTE=bodypoet]
More things I love about my Chiro: AND, he has a really cool turtle in a big fish aquarium. Remember, maybe 20 years ago, when you could buy a little turtle in a plastic dish at KMart? His is the only one I know of that survived.
[/QUOTE]
I hope he’s written up the case for the Journal of Reptilian Subluxation.