I've mentioned Skype in the classroom in many of my Gear News Roundups--often it's used to help sick students participate from the hospital, or to connect students from different countries to help them learn language skills.

Here's a great video about a dual immersion program at Marquette University in the USA run by Colleen Coffey. It shares student perspectives about language and culture exchange, and it really shows the benefits that video chatting can bring to the classroom. As Colleen says in the video, "Twenty-one countries speak Spanish, and all of them are on Skype."