You have to love the new world of collaboration
Tonight I jumped on IM and sent a message of congratulations to Roy about his MVP award (apparently he got it 4 months ago... news to me!).
While we were messaging Roy asked me if I'm on Skype - which I am. Roy added me to his Skype contacts and we were able to have a 10 minute voice collaboration session, talking about agile methodologies and, in particular, unit testing.
Programs such as IM, OneNote and Skype really do make it enjoyable to have effective collaboration over the net.