Camtasia is one of numerous tools in this market, but its easy to use and has the right combination of features. The latest version, 7.1, offers support for new video and audio formats (including the iPad), and better captioning support, which makes them searchable. It costs $300.
While there are numerous audio editors, including some with more features, Audacity continues to strike a nice balance between ease of use and functionality for the casual podcaster.
Audacity audio software
Compaq, back before HP acquired them, was the first to make this affordable and popular, and now IBM and Dell have a variety of blades available for their data center customers. The chassis have modular parts for disk drives and power supplies to make them ultra-reliable. This technology allows for dense racks of computers to deliver a lot of horsepower in a small amount of space.
The latest innovation on blades comes from Facebook, which has designed its own server hardware for their data centers, which they call the Open Compute Project.
Blade server technology