A few weeks ago I discussed about a new software called Fring. It converts your cell phone to VOIP. And just when you thought there was just one, several others came onto the scene.
What this means is that within time cell phone and VOIP service will exist sooner than you think. It's all a matter of getting all the networks to talk together.
Here is a list of more VOIP providers for your cell phone.
Links:
Talkster
Barablue
Nimbuz
