jonaspiela

Add a short teaser text with page thumbnail and link it to a page in your sidebar. The plugin takes care of correct linking. I am using the plugin on my own <a href="http://www.jonaspiela.com/" title="Jonas Piela" rel="nofollow ugc">website</a>.
Check out more details and screenshots <a href="http://www.jonaspiela.com/2010/12/24/wordpress-plugin-page-teaser-widget/" rel="nofollow ugc">here</a>.

Page Teaser Widget

Easily promote pages in you sidebar and forget about not updated links.

Mike Selander

Opaque Teaser creates a translucent overlay over your current theme to show off your work while blocking the nitty gritty details from your visitors. It will show up only for logged-out users, allowing you to keep editing and working on your website.
The plugin is simple to configure and uses your existing theme styling. It’s only a few clicks before your site is locked down with a beautiful alternative to the normal landing page.

Opaque Teaser

Use your template styling to create a semi-transparent teaser overlay.

Page Teaser Widget vs Opaque Teaser