Actually, there are a number of very good PDF to .doc (or .rtf, or other
formats) out there. Just think of PDF as a graphic. You're talking
about OCR programs. For best results, full-featured OCR programs like
Abbyy FineReader and OmniPage Pro are good choices with PDF conversion
modules built in. These handle PDF pages with graphics, charts, and
tables quite well with some practice. If one is dealing with PDF files
of merely text, or extremely limited graphics, cheaper (even shareware)
PDF convertors can be located readily with a search engine.