I think a cool to a topic would be learning about a karaoke shop. Learning how to get a room, talk about different types of genres: pop, hip hop, enka..., maybe get to hear more of the voice actors sing .
[off topic] am i wrong to call the jpod voice people, "seiyuu"? how is that written in kanji? [/off topic]
Or how about bowling? How to get a lane, a good way to introduce shoes sizes (i guess), hear bowling terms in Japanese.
Well at least these can be setting ideas, right? Any form of entertainment that can help us listeners get a feel of what to do for fun and how they do it in Japan.