CSS replace tables

I have been using CSS as far back as I can remember but it seems like I have not been using it effectively (slap wrists). The next few links could literally change the way you design websites - especially the "the noodle incident" link. Using the CSS on that page, you can see how you could build website's without the use of tables. This method does work well on simple layouts like a 3 column website but may be a challenge on more complicated sites and if you do choose this method, your WYSIWYG would not be so when editing in Dreamweaver,

With the examples below, have a look at the site with CSS disabled/enabled to see what's possible - you can use the developer tools extension with Firefox to disable the CSS.
www.thenoodleincident.com
www.alistapart.com
www.mezzoblue.com
www.glish.com

Don't forget that you should really be designing sites for search engine robot userbility too - not just people - Do a search for SEO to see what I am talking about.