50 Terrific Twitter Tutorials for Teachers

Great for beginners; plenty of new ideas for experienced users

Using Wordle of the Day on a Smartboard

Nice warm up activity for a class using Wordle

Curriki

The Curriki blog discusses issues in the increasingly important free and open-source curriculum movement - Curriki is a wiki for curriculum -- think wikipedia for lesson plan resources.
I found this resource through Diigo.

The Best Sites from Diigo in Education

Diigo is a community of users that tags and shares resources of interest to various groups. It has a very active technology in education group.
http://groups.diigo.com/diigoineducation/bookmark
I find many very useful sites through this group. The people who post here are very committed to sharing the best of what's out there. One of the best things about Web 2.0 tools like Diigo is the worldwide sense of connectedness you begin to develop as you use it.

Wisdom on Demand

Here's a site that just might meet Marco's apeal for using technology creatively in a liberal arts education iWise - Wisdom on-Demand

Using Movies to Teach Grammar

Claudio Azevedo has a great blog where he uses movie segments to assess grammar goals.

Using Word Clouds in ESL

Here's a post from Nik Peachey about using Word Clouds in teaching ESL.