Awesome deal if you're interested in the Civ games!
https://www.humblebundle.com/

Make sure to grab it if you don't already have it!

What does everyone use? Skype is a good fallback but for the past year I've been using a program called Raidcall

http://www.raidcall.com/v7/download-raidcall.html

It is like a Ventrilo or Teamspeak but it is also free. It's pretty good and doesnt have any lag. The group of mine is 5616123

Created this group to be a social game hub for all gamers that work at Vanguard. Please feel free to invite more people, but only present/past crew/contractors from Vanguard.