If you're using Chimera and you want to view the source of a page immediately (for instance, if it keeps crashing your browser like a page is doing for the latest nightly build for me), go to the URL bar and type:
view-source:http://www.yoursite.comThis will load the source in the browser window without attempting to load images or render the page. Very quick, very easy.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20021119055731446