If you're done having children, you may consider an IUD.

I got mine in 1996, and I won't have it removed until 2006. Ten years of worry-free birth control!

Very few women in the U.S. use an IUD, because of the horrible IUDs in the 70's. The new ones are completely different and don't have the problems that the old ones had. Mine didn't even change my periods at all, and I never even know it's there.