Thing 21 Podcast

I used Yahoo to look for pod casts. Many I found on greyhounds (what else) were out of date but one I like is K9 cast with Tara and Walter
Something like a pod cast that I listen to from tome to time is an Internet radio show called Greyhounds Make great pets.

Again, something that I think is a fun thing for your spear time but not something I think would be very useful for research.