If you talk about sous-vide, then you have to talk about food safety, and microbiology, and heat.
Nathan MyhrvoldPressure cookers are relatively inexpensive, they're in every kitchen store, your grandma probably had one, but a lot of people don't. A pressure cooker is interesting because by pressurizing the vessel, you're able to cook much hotter than the boiling point of water, and still have water be present.
Nathan MyhrvoldThe simplest fix for better grilling is to line the inside of your barbecue with tin foil. It dramatically affects how evenly the heat is distributed. That crusty black hibachi or Weber grill is doing your food no favors.
Nathan Myhrvold