Good Oils / Cholesterol

There has been a huge amount of recent research on the 'good oils'.  There benefits are wide and varied;
Omega-3 Fish Oil - for cardiovascular health, infant development, depression, brain function....the list goes on.
Omega 3.6.9 Flaxseed Oil - a good alternative to Fish Oil if you're a vegetarian or vegan.
Evening Primrose Oil - for skin, menstrual pain, rheumatoid arthritis.