Is there a way to save web pages or wikipedia pages to the kindle for offline viewing?

I don't think there is any way to do it directly on the Kindle. The only way I can think to do it would be to save the HTML pages on a computer and then use the Mobipocket Creator to make the HTML into a book.

And .... that's probably not what you were hoping for ... right??

I've been thinking of the same thing, specifically so I can save free online web magazines in html format onto my Sony Reader. It can be done one page at a time, but that's kind of a hassle if there's a lot of pages: I know Plucker can do this kind of thing for Palm handhelds, but it would be interesting to know if there was any suitable software that could carry out the same task, but export to e-ink devices.

For the 500/505, use Calibre.

I use Calibre already. Can it convert a batch of weblinks into an ebook?