It depends on what sort of controls your looking for in a camera. I currently take a Canon G12 with me because I like all the options it has. If you want to remain simple and light something like a G100 would probably be good for you. It's a good little camera and weighs about 7 ounces with battery.
If you do take a camera for long distance hiking you will have to consider your power options and what you plan to do to recharge it if it does not take AA batteries.
