How to lighten with the new blending mode in CS5?
Good old gamma adds some fill light to the shadows.
Shadow/Highlight under inspection again
A particularly handy enhancement in Photoshop CS and up.
A familiar situation: a light sky with buildings covered in darkness.
Sending a bit of sunshine to the shadowy areas of a landscape photo.
We lighten up shadowed areas while breaking in those unruly highlights in Photoshop.
When lighting is strong, you have to fight shadows, too. They might overcome for a time, but there is always a chance for another battle.