We talked Open Play campaigns (via Justin Alexander's site) and Old School Dungeoncrawling on my Geek Gab streamcast yesterday, including RP'ing in the dungeon, changing things up, and the need for a slight touch of DM maliciousness.
34 minutes, http://www.youtube.com/watch?v=Pn7akPQSsKE&list=PLNxCsdIoDKzgNMz85alE-mghFvW7YvLAb
Give it a listen!