It's quite funny. They talk about things, have strange games/contests and interviews, etc. It's quite fun. They put out a podcast of their show everyday- it usually goes up around 11 AM Philly time. It's on iTunes- look up WMMR's Preston and Steve Podcast. There's a few other ones, but that's the name of the official one, and has the most up to date days podcasts.
Also, for more info, the wikipedia page on the show: http://en.wikipedia.org/wiki/Preston_and_steve
And the website: http://www.wmmr.com/shows/preston-and-steve/
Oosta!
Never underestimate the power of the nerd!