Ever had a PDF that you needed to change a few items on? There’s an extension for OpenOffice.org 3.0 which enables the importing of a PDF document into Draw and Impress (some of the OOo applications), where you can then perform basic editing.
OOo’s built-in export function means that you can then re-create the now updated PDF. The extension however, also enables the export of a hybrid-PDF which contains not only the new PDF but also an ODF version of the original file.
Could be handy.