My recommend this!

English teacher told me that NPR is very good for improving listening ability. I had never heard the name like the name, but it seemed the name, like CNN or ABC.
Anyway, I heard the listening program today. umm… definitely ideal one. Though I don’t know how it is for TOEIC, it’ll become practices for TOEFL. Speed, length and difficulty of the contents are also suited. I think it may well become good for practicing for TOEIC, too!!
If you want to try it, you can go from this article or Ellen's web log.