If you're an English teacher, you'll really want to subscribe to Sharon Elin's Delicious bookmarks. She consistently tags quality sites.
Tech Training Wheels offers a one-stop shop for tutorials about many applications using step-by-step videos and screencasts to guide users at all levels.
Booklist features the Year's Best Crime Novels: 2010
Interactive Science activities and lesson plans from JST Virtual Science Center.
Library display ideas from the ECYA Blog.
The Royal Shakespeare Company presents Such Tweet Sorrow - Romeo and Juliet 140 characters at a time through the eyes of six of the cast.