Today MacZOT has ProfCast on sale for $23.95 (down from $59.95).
The developer describes the software as follows:
ProfCast is a versatile, powerful, yet very simple to use tool for recording presentations including PowerPoint and/or Keynote slides for creating enhanced podcasts. ProfCast provides a low cost solution for recording and distributing lectures, special events, and presentations as podcasts. ProfCast offers an integrated workflow that makes creating, recording, and publishing podcasts easy. It’s as simple as Launch, Load, and Lecture!
I'm actually in the process of reviewing this software for Surfbits and generally pleased with it but it is too early to really give any details. It is certainly much more appealing at $24 than $60.