This is a thoroughly crazy site. It is like a visual negativland. Whoever these geniuses are, they have a lot of time on their hands and a lot of fonts. You will need flash, a good set of headphones and a very lenient HR department. Some of the things on this site are very NOT SAFE FOR WORK. I don't want any emails about how you got fired due to the garofaloland page having the f word on it. Just click around and have fun.
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.