I travel by train  to the office regularly now. Although this sometimes takes longer than driving, it is more consistent and it gives a couple of hours a day where I can do some reading without interuption (plus I feel I'm doing my bit for the planet! :) )

This will seem geeky, but I get fed up listening to CD's or the radio (though Classic FM is a great soother) and have recently started getting the SharePoint podcasts. personally I find the podcasts easier than webcasts (perhaps because I don't have the distraction of the PC?). You can download the mp3's or find them via iTunes

These are hosted by our friends at Lightning and have some great content for developers and administrators.