Dan Cooper
Victory Salute
All the documentaries in the Crime Investigation Australia series are great, as well as the follow-on series, Australia: Families of Crime. They have The Backpacker Murders, The Bega Schoolgirls, Snowtown, The Granny Killer, Kimberly Killer, just to name a few. All worth a watch.
I've been watching Families of Crime the past couple of days. Very well made, and found the Carl Williams, Brian & Les Kane and Pettingill/Allen episodes particularly informative.