I know that WordPress can be used as a great CMS engine, and there are some plugins that help in this task.
Only think I wasn't able to find out is how to change its home page, to show previews of a bunch of posts/pages. I've seen this kind of homepage in some sites, they are able to qhickly change a preview to one page to another page, or use a bigger space to give more evidence to a special page.
just an exemple: http://bbb.globo.com/
How can we do this kind of thing think with WP?