Man, both Spelunky and Dust are both really good! I probably have to give the edge to Dust though. I am really having a good time playing through the story. It has a lot of charm to it. The combat is fluid as hell too.
It's good to see Jim Sterling's piece mentioned here. He seems to get a bunch of shit for what he says but it always seems that whatever he has to say makes a lot of sense. He often has a lot interesting things to say