How can I view the raw XML of an RSS feed in Safari (or Reeder)?

I want to see the raw XML of an RSS feed for a podcast.

In Safari, as of Lion formatted XML files is supported. But RSS feeds are not formatted that way and instead presented in Safari's RSS Reader mode. A view source on that page doesn't display the RSS feed as I expected, instead the HTML and CSS used to put the viewer together.

Is there another way to do this in Safari? I also have the RSS Reading app, Reeder, installed, so I'd be willing to do it in there if possible.

Here’s a Safari extension to view the raw XML data: https://github.com/sergeche/xmlview#readme

There’s an online demo, too: http://media.chikuyonok.ru/xmlview/ This works in Firefox, Chrome, and Safari.

Edit: Sadly, this extension doesn’t work in Safari 5.1. There’s an issue for that here: https://github.com/sergeche/xmlview/issues/16

Alternatively, you could always open Terminal.app and just use curl to view the raw RSS/XML contents:

curl "http://example.org/some-feed.rss"