Rogue Amoeba released Audio Hijack Pro 2.7 today making it a podcaster's dream. This already indispensable application has just gotten better with the addition of the 'MegaMix.' This feature (enabled by default if you are recording an iChat conversation) records incoming and outgoing audio from an application thereby making it very easy to record everyone in on an iChat conference call with one app (this also works in Skype and Gizmo).
Read all about the changes here, and take a visual tour at Rogue Amoeba's blog.
Audio Hijack Pro costs $32.