Ask HN: What tools do you use for remote pair programming?

I found a a great article by Pivotal about how they use tmux recently http://pivotallabs.com/how-we-use-tmux-for-remote-pair-progr... Anything else amazing that I'm missing?

If you are a Linux console lover like me, I have a tool I've been working on for a while: Termbeamer (termbeamer.com). The win over screen/tmux is that it is much easier to set up (especially if you are behind NAT or a firewall).

If you work on a mac, I have had some luck with ScreenHero http://screenhero.com

In my case macfusión with st2