grapeseed oil is one of my favourites when it comes to cooking, especially for frying things. if you haven't tried it, you should. amazingly, there is little smell in comparison with other vegetable oils which is a big plus when you have to fry anything. while it's not completely odourless, it is noticeably tamer. another good thing about frying with grapeseed oil is that its smoking point is at a much higher temperature than regular vegetable oils (approx 215 C).
beyond frying, it is also good for salad dressings and general use.
buy some. try it. as martha says, "it's a good thing" ;)
more about it, here and here. just remember, however, to buy PURE grapeseed oil and not a blend.