Peanut butter is a great addition to many foods you wouldn't expect. The sweet and saltiness accents spicy or savory foods really well.
Most commercial peanut butters have sugar added (ugh). Peanut butter isn't supposed to taste sweet. The only brand I buy is Laura Scudders Natural Peanut Butter (chunky style), the kind you have to stir and refrigerate to keep the oil from separating. All that's in it is peanuts and a touch of salt.
If I need something quick and cheap, I'll throw a spoon-full in some instant noodles (use less water or strain them so when you stir it in it doesn't get too watered down) for a pretty damn tasty meal.
I may actually try that sometime. Sounds like a quick and cheap version of Thai noodles with peanut sauce.
I agree with auntiehill
. The only thing peanut butter doesn't go with is MEAT. Ecch.