My 1995 olds 88 starts most of the time but sometimes i try to start it and the starter doesn't work. There is power to the dash but nothing to the starter. Ican sometimes get it to start by moving the gear shift back and forth. if it doesn't start i can try the next day and it will start just like nothing was wrong.

This intermittent kind of "no start" problem can often be a result of a failing anti theft system. Read this link and compare you symptoms. If you see a light that reads "security" when this happens, then this is definitely your problem.