Bandwidth Monitoring With Interface Traffic Monitor

I had another engineer come to me the other day and he asked me what other tool he could use to monitor the bandwidth of a circuit.  His users had this video conference going via gotomeeting and, although I was not on the call he was on, my guess is that someone on that call had some latency issue in the video.  So while he was on the call, I told him lets pull up Interface Traffic Monitor.  I really like this free tool.  Its a realtime bandwidth monitor that allows you to see just how much bandwidth is being used.  So I quickly configured it for the site that was having issues, and sure enough, they were seeing 100% utilization on the T1 link.
See below the screenshot of when the user was on the video conference and when they were not on it.