Well, first you need a very large sword...
No, actually, the way I beat writer's block? I go and research the first thing that comes to mind, whether it's a cheese sandwich or the kama sutra. Usually, since I'm so easily sidetracked, I find myself researching something entirely different after twenty minutes or so, and I have to wonder how I managed to get there. It probably helps that I'll read just about anything. This is how I get inspiration for a lot of things, and it does help with writer's block.