Now this only works for the picspams that have the images all their normal size, but it just saved me an hour or so with a couple.
What you do is select the whole post, copy it and paste it into Word, then save the document as a web page. It then saves all the piccies out as files.
It even does animated gifs!
I am sure this is old news to some, but it was new to me, so I thought I'd share.
[Edit: you can also save the webpage and it does the same thing, but it will of course save icons and other images too :) Thanks alyse for pointing out the blindingly obvious, which I had completely missed ::g::]