Last night I listened to the latest Stack Overflow podcast, since it was about Mono. Personally, I am not a big fan of podcasts or videos, as I find them to be a very inefficient way of learning. It is much quicker to read an article (and reread the sections you want) than to listen to an hour of rambling.
Anyways, the one thing that makes it more tolerable is a feature of Windows Media Player called Fast Playback (they also have Slow Playback). It plays the stream at 1.4x (I think) speed, so less time is wasted.
I have never seen this feature in another media player. Are there any other media players that support this?