Silverback, from our friends at Clearleft, is a really nice new Mac app for usability testing that makes uses of Macs’ built in iSight, the Apple Remote, and more. It’s a simple app, but it’s extremely well-designed (as you’d expect from Clearleft!), and appears to do what it does very elegantly. If you do usability testing with live subjects, you really should check it out. Also noteworthy to an animals lover like me: Clearleft is donating 10% of the profits to saving the gorillas. Awesome.