http://www.livingroomcandidate.org/ this site has commercials from 1952 presidental elections to present day. It seems like a great resource for history teachers. :)
http://www.letterpop.com this one cost, but it may be something a school could use to improve communication with parents. It pushes content to twitter, facebook, flicker, and e-mail. My guess is that it is cheaper than bulk mailing. Looks like a tool for a multimedia class or a journalism class.
http://www.befunky.com looks like a great resource for students to use when creating original photos for projects. As a teacher you may want to preview the photos before letting students on the site. I would also recommend creating a class account that students must use,so you can monitor their work.
ISTE has a page at http://www.techsoup.org/support/articles-and-how-tos/finding-and-using-images-from-the-web that explains copyright issues on images found on the internet. Great site to use in educating students as they begin to create and collaborate.
http://www.toondoo.com is a free web 2.0 software that allows one to create their own cartoon and develop their own stories. Looks like fun way to get students who are not interested in writing to join in the learning.
In my Computer Application class students learned how to merge a word document and a spreadsheet together using a function called Mail Merge. I wanted the project to be authentic, so students wrote letters from Santa. The letters where sent home to Elementary student's parents. The letters had blank spaces for parents to complete and send back in order to personalize the letters.
Once the letters came back, students constructed a database using Numbers. They went through a few steps to merge the two together. Below is a video showing the results of their work. This project took place during November and December.
http://www.arcademicskillbuilders.com has several games for grades k-6 to reinforce academic skills.
http://www.4teachers.org/testimony/hughes/ is a success story of how technology enabled a special girl to meet her goals and become successful.
At http://alexkajitani.com/rappin_mathematician.html you can purchase or inspire your students to compose their own Math rap.