"Docsplit is a command-line utility and Ruby library for splitting apart documents into their component parts: searchable UTF-8 plain text via OCR if necessary, page images or thumbnails in any format, PDFs, single pages, and document metadata (title, author, number of pages...)"

AWESOME. Surprised I've never seen this before.

GIFexplode converts animated gifs into a sequence of still images.
The website allows you to break down a gif and you can then save each extracted frame.