For a few weeks now I've subscribed to Terry White's Creative Suite Podcast. I have to say it's been a generally good experience. If you use any of the Adobe Creative Suite products (which keeps getting bigger each release), there is going to be some good information here for you. For example, you raced out and bought CS3 because you wanted Photoshop Extended so you can work with video. But how does it work? You'll want to watch the podcast on that very subject.
There are dozens of podcasts available, and to be honest, I've had a lot of fun learning more about Lightroom (which he acknowledges is not officially part of the Creative Suite). And the beauty is, if you subscribe to the podcast in iTunes, you get the complete archive list, and can grab any of the podcasts you like. I do this when I'm bored at work sometimes (did I just type that?) or when I just need a distraction to get the creative juices flowing.
Anyway, check it out at creativesuitepodcast.com. Usual disclaimer: I don't know Terry and I don't get anything from promoting his site. The audio quality varies all over the place too, so start each one with the volume turned down a bit. Terry, if you need some help on this, give me a call. I'm happy to trade out some audio sweetening for a copy of CS3 for Mac.