Pattern Clock is an alarm clock that can not be turned off until the sleeper can repeat back a randomly generated pattern of flashing lights.
The video on that site is just so horrifying. I need the snooze button. My cell phone's alarm clock has an excellent "auto-snooze" feature that goes to snooze mode after a minute of beeping at me. I like that, it is very efficient.
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.