Feedsnap is a very simple plugin that will render an RSS feed to your post.
<h3>Useage</h3>
Enter the following in your post [feedsnap]feedurl[/feedsnap] where feedurl is the url of the feed you wish displayed.
Example: 
[feedsnap]http://forums.digitalpoint.com/external.php?type=RSS2[/feedsnap]

FeedSnap

Feedsnap is a very simple plugin that will render an RSS feed to your post.

rajuru

Using this plugin you can show RSS Feed inside any post. The RSS will be loaded when post is loaded so you can show dynamic relevant contents through RSS feeds.
This plugin uses WordPress’s built in feed handling functions that also uses cache.
Read details on http://hungrycoder.xenexbd.com/?p=865

FeedSnap vs In Post RSS Feed