Just a quick entry to put it out there that I am working on putting the backlog of sermons on the site. As is my practice, I change the date of the posting to the date the sermon was preached. As a result, these backlog sermons won't appear as newly posted in the site (in the menu), but you can find them in the Sermon links all around the site.
Not sure which ones they are? They're the ones with dates between September 29 and December 22, 2010.