Jonathan Brinley

The standard excerpt field will appear on pages, just as it does on posts.
Additionally, there is a new widget to display the excerpt of a selected page.
Created by <a href="http://flightless.us/" rel="nofollow ugc">Flightless</a>

Page Excerpts

The plugin is built for something very specific, and does it perfectly.

Simple but effective

Adds an excerpt field to pages, and provides a widget for displaying page excerpts

Seans0n

Custom Excerpts allows you to implement custom excerpt text, length, and to choose HTML tags to allow and whether to make the link nofollow or dofollow. Previously the only way to achieve this was to edit the WordPress core file formatting.php which meant changes would be lost after each update.
Related Links:
<ul>
<li><a href="http://www.seanbluestone.com/customizing-the_excerpt" rel="nofollow ugc">Plugin Homepage</a></li>
</ul>

Custom Excerpts

Custom Excerpts allows you to create a custom excerpt length, choose HTML tags to allow and whether to make the link nofollow or dofollow.

Page Excerpts vs Custom Excerpts