With modern technology, you can put your own eulogy on a chip and put it in an iPod on your tombstone. Others have put a slide show or music on it. You can also have poetry, videos and your last words on it.
There is a company named Vidstone LLC in Wisconsin in the United States that has invented this marvel. With myself into genealogy, I know tombstones break in half and the etchings disappear, but the computer chip seems like a good bet.
Most people think that the monuments last over a hundred years ,but they never visit the cemetery to see how it has aged or been vandalized.
http://www.vidstone.com/