I've visited Australia six or seven times but mainly stayed in Sydney or Manley, so didn't see any kangaroos except for in the zoo. But, this is cool, while riding horses in the outback we came across groups of wallaby grazing. They would just stop and watch us go by then go back to their own business.
Another time I was in in Darwin and came across a restaurant that served kangaroo stew. My friend had it and said it was very tasty. We were told that they are able to hunt them because if not, they would over populate.