Recently, the sciatica has really been acting up. All I can do is lay around and moan. I dug out my copy of the Trigger Point Therapy Workbook and read the section about the various gluteal muscles and noticed I had a couple of the trigger points. After applying pressure to those areas (which hurts like a *&^@$$!!*) my leg pain was greatly reduced. If you are having any sort of chronic pain and are looking for another avenue of relief, this is $13 well spent ($9.99 used).
I have found it helpful to do the stretching exercises my physical therapist recommends. Do some core strengthening exercises, such as the ones highlighted at The Mayo Clinic. By keeping your core strong, your back won't put itself in a position to cause that sciatica pain you are having.