The iPhone Application List: http://iphoneapplicationlist.com/apps/education/
Yes, it is focused on the iphone and not the ipad..... but that means these apps will work on both! Free and paid resources focused on education.
designer-case.com
Ipads in Education: http://www.ipadineducation.co.uk/iPad_in_Education/Welcome.html
Some really good resources and information coming from the United Kingdom. Nice listing by content areas.

iPad Schools: http://ipadschools.wikispaces.com/
A collection of apps that have been tested by teachers who are actually using them. Lots of great information pertaining to classroom use of ipads.

The iPad Curriculum: http://www.ipadcurriculum.com/about/
A blog containing articles about the ipad in education. A good searchable database is part of the site.

Teach with Your iPad: http://teachwithyouripad.wikispaces.com/
An incredible collection of apps organized and briefly reviewed. Very helpful.

The iPad Pilot Project: http://palmbeachschooltalk.com/groups/ipadpilot/
Info from Palm Beach County school district on their implementation of iPads as a pilot project. Great suggestion of content apps.

Learning Continuity: https://sites.google.com/site/learningcontinuity/with-ipads
A Google site created by the Acalanes Union High School District; gives you 75 good apps for education that are easily found by their sortable collection.

AppAnnie: http://www.appannie.com/top/ipad/united-states/education/
The AppAnnie site shares about 200 clickable links to great apps for education. Great resource.

Tony Vincent's Learning in Hand Blog: http://learninginhand.com/ipad/
Includes not only his list of suggested learning apps but also blogs about ipad and some practical classroom.

iPads in the Classroom (https://sites.google.com/site/schrockipad/) is a site created by Kathy Schrock.
It is intended for her use as she presents on the iPad but also to provide valuable resources for others.

Teach with the iPad: http://teachwithyouripad.wikispaces.com/
A site that provides a large variety of suggested apps for multiple grades levels and content areas.

App for That Wiki: http://app4that.wikispaces.com/
Very nice App directory created by educators. Especially worth checking out is the section called A Day in the Life.

21st Century Innovations: 21st Century innovations
A sitethat skillfully categorizes about by which of the Bloome's Taxonomy's task it tackles.