Carter

This plugin takes the 5 latest posts from the FrontPage category and rotates their titles and excerpts using a JQuery scroller. Based on <a href="http://www.learningjquery.com/2006/10/scroll-up-headline-reader" rel="nofollow ugc">Scroll Up Headline Reader</a> by Karl Swedberg.
User options allow setting custom width and height. Timing and direction of the scroll cannot currently be set by the user.

Simple Headline Rotator

A simple headline rotator that uses JQuery and pulls data from the FrontPage category.

LiRo

Adds headline BBCodes to WordPress.
With index: 
[hl]Headline[/hl] 
[hl=1-5]Headline[/hl]
Without index: 
[h]Headline[/h] 
[h=1-5]Headline[/h]

Simple Headline Rotator vs WP-Headline