Librivox audiobooks in the public domain
Librivox is an interesting idea, they have free audio books available to download and listen on your music player, they are free because the copyright laws on a piece of work disappear after a certain period after an author dies. Librivox gets people to volunteer to read the stories aloud from the public domain.
http://librivox.org

Use Jajah from your handset to make cheap internet calls
Jajah is the best way of making phone calls over the Internet. Its different to Skype because you can call from your own handset. You pay online to set up a call then it calls you and your destination at the same time so that you don´t pay anything on your phone. I use this effectively while in foreign countries, I buy a cheap local pay as you go SIM card for my mobile then jump on the internet to initiate a call, then you can wander down the street in say the highlands of Guatemala while chatting to your friend back at home. I combine this with my Palm computer which I can pick up WiFi in cafes so I can just sit in a cafe and call internationally too.
http://jajah.com
http://mobile.jajah.com