The Racing Guide Remote Control is a phenomenal concept. While targeted at NASCAR fans with it's ability to sync up driver standings and news for ready reference during the race, it also stores a full seven-day tv schedule. Sure, your cable box/tivo has a guide built in, but it covers the whole screen, obscuring what you watch. I like it.
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.