Mexican Chocolate Tofu Pudding. Can be adapted as mexican hot chocolate (with soy milk)! The one at Raymond's is the best, with a homemade (cubic) marshmallow in it.
Ask Ben about his green tea chocolate tofu pudding. If you want.
I made these Chile Brownies for a Superbowl party. They were too spicy! But it is fun to watch people's faces when they eat something that they didn't anticipate having a kick.
I'd say if you are going to do a spicy chocolate thing, and you can't get your hands on chile powder (milder than chili powder), go chipotle but don't use too much. It has a smoky flavor that complements the chocolate. I'm putting it in everything these days. Tomato sauce even.