I've got two Omeka sites I am building up simultaneously. The first is a multimedia site to accompany a book I've written on an American rifle company in the Pacific during WWII, which will be at 182ndinfantry.org. I've got thousands of primary source documents, photos, etc, and I'll be using these to recount the narrative on the site. This site will be launching by March 2010.
The second project is an exhibition on the John Warfield Collection here at George Mason University Special Collections and Archives. We've got 100 boxes of material on Warfield and will be developing an exhibit on his life and accomplishments.