The site that archives the whole internet is
www.archive.org
It only catches the front page of TFP. As for saving to disk, I recall Sty saying last week that the database passed the 2GB mark. The problem that you would probably have is that certain information (hidden email addresses in TFP, Admin areas of most sites, etc.) are set to restricted viewing rights. Anything that tried to save everything to disk would get horribly confused by the TFP, and also suck down a whole hell of a lot of bandwidth (which does not make administrators happy. )