Dr. Kiki's Science Hour, a podcast I only just discovered, devoted its most recent episode entirely to dinosaurs. Convenient!
It's a great conversation with Dr. Mark Goodwin of UC Berkeley, dealing with his specific research interests as well as the and work of paleontologists in general. Anyone curious about exactly how paleontologists find fossils, study them, and figure out how dinosaurs lived should find the hour pretty illuminating. Clickity-click the above link to give Dr. Kiki a whirl.