emFAST have created a neat application for BlackBerry called FACSys that enables users to print an e-mail, Word document, spreadsheet or PDF from their BlackBerry, directly to the nearest fax machine.
If you would like to purchase this, check it out on App World.
FACSys is not the only product out there that allows you to send your docs straight to fax. The following are other companies that provide the same service:
Cortado Print & Fax for BlackBerry
Fax or print e-mail attachments or documents in original format. Create and send faxes using fax templates. Get a free file manager with 1 GB free Online Storage Space.
Mail2Fax – Document Printing for BlackBerry
Send mails and attachments (like documents, sheets, presentations, PDF, graphics) to a fax gateway for document printing.