Jajah is a new telephony service that allows you to do free calls in between land lines all around the world (if you are a registered user). All you have to do is go online and type in your and your friend’s phone number and both phones will ring and you can start talking.
Link

The 2nd clip with the message in a bottle. Check the first one with the pigeons here.

PodTube allows you to easily download any YouTube movie and encode it as an mp4 file which is perfect for your iPod. The only requirements are that you work on a Mac and open the YouTube movie in Safari. Buggar. Why can’t they make it compatible with Firefox? But it is the simplest tool I’ve seen so far.
Download link

A free application that lets you explore space in three dimensions. Available for Mac, Windows and Linux.
Link