Mark gets iChat AV'd
Last night Mark and I had an hour long voice conversation on iChat AV. He calls me quite regularly from California, on his land line or cell phone. Those calls add up. I bet he spends about $50 a month on average calling me. I think we'll be able to use iChat AV for a non-trivial portion of those conversations in the future, which is going to turn into non-trivial savings.
Eventually I'd like to get a headset, like Logitech's new "Stereo USB Headset 200", to ensure that my speech is as clear as possible, and that I can hear the other side well, and not have the conversations be "speakerphone" calls.