Yep! So does Olive oil, Avacado oil, Coconut oil, etc.
Some of the benefits attributed to grapeseed oil are probably not true. There are some goodies in grape seeds that are water soluable - so they will not be in the oil, but will be in things like fresh grapes, grape juice, red wine, or in grape seed extract capsules/tablets but not the grape seed oil capsules.
You might look at this article on
grape seed oil on Wikipedia - and you can read the
Scientific References for a little more information. You will note that some of the health benefits made about grape seed oil are disputed.
Yes ... and without some fats in our diets (especially the essential fatty acids) our bodies could not function properly, nor metabolize fat soluable nutrients - like Vitamine E for one example.