I'm one of those photographers who tries to get the shot as right "in camera" as I can - mainly due to the fact that I don't have a traditional darkroom and, generally speaking, I don't like over-manipulating - whether it's a digital image or a scanned negative. I would also add that I only use them on landscapes and wouldn't normally use them on portraits or street shots.
Consequently, I've a small selection of ND graduated filters which I use to balance the light and shade. Now, I know they have their drawbacks when it comes to uneven horizons and I know it's not always easy to get the balance right, but what's the general take on filters within the Filmwaster community?