Write to CD/DVD after finalizing?

Does anyone know of ANY possible way to write additional data to a CD-R or DVD*R after the disc (not just a session, in the case of a multi-session disc) has been finalized? I’ve got a (generally very knowledgeable) co-worker who swears that it’s possible and claims that he’s seen it done. Can anyone else confirm this one way or the other?


then why not get Mr Know-It-All to do it for you ?