I have to admit I like good ideas, and what I'm going to describe is one of them. Comrades in the CWI in Boston, MA in the US have launched Socialist Alternative Radio, to spread the ideas of socialism and marxism across the airwaves. And it's a damn good listen.
Generally speaking the typical show has a look at the previous weeks news, an interview with an activist of some kind (has varied from the Green candidate for governor in Massachussets to other members of the CWI across the US to striking workers), various music, book and film reviews and solidarity anouncements for the local (Boston) area.
So if you're bored on a journey for a couple of hours (like I am a lot), download this to your MP3 player (if you're lucky enough to have one) and listen along. It can be downloaded from http://www.wmfo.org/index.html every week, or listened to live there (or in Boston of course). Just go to Schedule on the site menu and then find Socialist Alternative Radio and click last show.