Gradhopeful,
While I am reluctant to post my statement of purpose, I will suggest to you a book written by Donald Asher called "Graduate Admissions Essays: Write Your Way Into The Graduate School Of Your Choice." It is in its third addition and it is really helpful. Asher has numerous samples of successful SOP's for a wide range of programs. Plus, there are even samples of SOP's for fellowships and he gives general tips on making the entire application process an overall rewarding experience. I can promise you that if you pay close attention to this book you will do well on your applications.
Best of luck