Conversion Central: 101 Tools to Convert Video, Music, Images, PDF and More : Codswallop. There's some good stuff here. It's a reference work a pointer or two. Most XP, some OS X and GNU. There's no date on the post, but I think it's 1-2 years old.
The author also offers a Creative Commons PDF converter and happens to be a mind mapping fan.
These are all rather good signs.
The blog has some other interesting posts, but a peculiar URL: http://www.cogniview.com/convert-pdf-to-excel/. The blog feed is via FeedBurner, I'll give them a try.