Ok, I've been very slow to jump onto the podcast bandwagon, mostly because I rarely use my mp3 player these days. I also didn't think I'd be able to pay attention to the podcasts while doing other things, and thought I'd hear about important science breakthroughs anyway, and would rather read the paper.
I'll have to eat those thoughts.
The podcasts from Cell, Science and Nature are superb. I've just come to the conclusion that they are a great way to find out about some of the latest breakthroughs in diverse areas of science. I used to be very good at at least scanning through the latest issues of all three magazines, and a few more, but sometimes it is hard to keep up with them all. The podcasts compile some neat work not just from the main journals, but also from other "family" journals (for example, the Cell podcast includes some interesting stories from Molecular Cell or Cell Metabolism etc).
And they are perfect to listen to in the lab, while number crunching on the computer, or catching up on email, or while doing trained monkey experiments like plasmid preps.
This week's Nature podcast in particular is fascinating, with everything from PZ talking about squid eyes to economist Jeffery Sachs and the "crowded planet challenge". Go read.