I have been meaning to post this for some time now but keep finding more timely items.  It pertains to a new preaching resource, Sermon Cloud.  Sermon Cloud is a Web 2.0 application where preachers can post their own sermons and browse the sermons of others.

On the right hand side are "clouds" where one can click on a topic or,
scrolling down, a book of the Bible.  As an example, under the topic section I clicked
on "sermon on the mount" and found 13 different sermons.

Obviously
there are issues of plagiarism as well as the fact the many of the
sermons you find up there might not be all that good.  But, if you are
looking for a place to prime the pump of creativity, here is another
source for you.  Happy sermon prep!

Thanks to http://www.churchmarketingsucks.com/archives/2006/09/making_the_most_1.html for the link.