As of late I have been looking into what ways that I could record a usability session of an application on a Mac. Windows definitely has an edge here with the Morae application from techsmith. This is a feature rich application that captures a usability session as well as make it easy to produce some nice reports. It captures both the screen and if you have a web cam, the subject. There is nothing equivalent for the Mac. However, there are a number of tools available for Mac OS X that can perform most of the functions of Morae separately.
Mt Fuji with clouds.