Question: I've got a `xls` file with exactly 167 images that I must save and post on a website. The sheer number itself is painful, but what complicates things is that you can't directly save images from Calc - you need to copy it to Writer first and then save. 

This isn't the way I would like to do things, so is there a way to save all the graphics in the file somehow?

Answer: 
1. Open the xls file in OpenOffice or LibreOffice
2. save it as a open document (`.ods`).
3. rename file to have `.zip` extension
4. uncompress that zip file

All images should be in a `Pictures/` directory in that zip file. 

This also works if you are given a .PPT which can be saved in Impress.
If you want to get scripty there are some perl scripts to unpack Open Document Formats at:

<http://books.evc-cit.info/odbook/ch01.html#unpack-program-example>