You want apps? Well have I got a resource for you! This spreadsheet, maintained by the Texas Computer Education Association, contains a wealth of information about apps for iPad, organized by subject area. It is regularly updated with new apps, information, prices, etc, so check back regularly.
This site provides an extensive and well-organized directory of free educational videos. It has media covering a wide range of subjects and age-levels. Check it out at www.teachersdomain.org.