A good friend of mine, Aled Hughes, spoke to me today on msn and was talking to me about a feature he found on Leopard. If you press shift+option+volume (option being ‘alt’), then you can increment/decrement the volume by a quarter of a volume block:
Another of those little features Apple like to hide 
That’s pretty cool, I didn’t know that! Not a huge amount of point but still..
This is great as on my system there is a big jump in volume between off and minimum.
nice shame they don’t do that for brightness or do they?…….
————————————————-
ricrhys, it doesn’t seem to work, however, pressing option+bightness (up or down) opens the display preference pane for you!