Beautiful. I can easily see using this regularly on my Windows machines.
Some items: 1) It'd be nice to be able to scroll around directly on the graph using mouse gestures (middle-click drag?). 2) Graphing of bandwidth seems to be off somehow. If I do a speedtest.net, my ~104Mbps transfer shows up on the graph as 38 Mbps and the graph scale shows a max of 20 Mbps. http://imgur.com/QkZMVvj