Skype has just announced free SkypeOut calling to any phone (landline or mobile) within the US and Canada from any computer within the same.
The catch: its not freakin free for people outside the US and Canada! and SkypeOut is only guaranteed to be free until the end of 2006 - after that it looks like Skype will decide whether or not the trial run was worth it for them. In the meantime, it’s awesome to see VoIP going free even if it is only for american and canadian citizens.