This trippy tribute to our country's 200th birthday was funded by a Bicentennial Project Grant and animated by Vincent Collins who made other psychedelic cartoons. This film was produced by the United States Information Agency - the government's propaganda agency.
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.