[Jessica Boucher]

You can also spend most of the time talking.

Check out http://radio.babson.edu/ - that's Babson's radio station.

Here's a couple of examples of "talk radio", college radio-style...the title's are first.
"Ming & Travis' Storytime Half Hour" - Basically two guys ranting. They've been known to read things that they found funny over the week.
"Don't Hate Me Because I'm Right" - Political discussion...he regulary has guests in the studio or has them call in and argue with him.
"Bad Boys" - Two guys ranting...mostly about the Red Sox. However, they are more of your classic morning show: they give prizes (like Ernest Goes to Camp posters), have a top ten list, and talk about current events.

Hope this helps!