Inversion therapy is one sciatica treatment that has some pretty good write ups. One of the best positive reviews I have seen for this method can be found here:-
http://ezinearticles.com/?Breakthrough-In-Sciatica-Symptom-Relief&id=925426
Although the guy is obviously plugging it to drum up business, there are some pretty impressive advantanges of spinal decompression. What other sciatica treatment can boast the following?
“Preliminary studies have shown a success rate for spinal decompression of 80 to 90%, with the beneficial effects holding up well over the long-term. The one-year recurrence rate post-treatment is less than 5%.”

