Food sources of monounsaturated fats and polyunsaturated fats:

http://cholesterol.about.com/od/cholesterolnutrition101/f/highunsatfoods.htm

The following foods are high in monounsaturated fats:

peanut butter
olives
nuts – almonds, pecans, pistachios, cashews
avocado
seeds – sesame
oils – olive, sesame, peanut, canola

The following foods are high in polyunsaturated fats:

walnuts
seeds – pumpkin, sunflower
flaxseed
fish – salmon, tuna, mackerel
oils – safflower, soybean, corn