This site is great for teachers, parents, and students. You can watch videos on just about anything. It is useful for every subject and entertainment for the students. For example, The Magic School Bus is a popular video I use in school.
This is one of my favorite websites. During snack time, I put on one of these stories for the students to watch. The book is usually read by a celebrity and the pictures are shown to the students.
This is a great classroom website for guided reading. You can download many different levels of guided reading books with running records and activities to go along with each book.