Here's something I'm sure many people have seen, though never noticed. Whenver there's a pizza party, be it at work, or whereever, people go crazy with the ordering. They never order the things they'd get at home, they always get a bunch of super-meat, and super-vegatable, and then like one pepporoni and one cheese pizza.
And then the first five people snag all the pepporini and cheese...
This happens way too much for my liking.
(Link from Z-Blog, which also has some very astute observations about software development.)
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.