white geraniums
lily of the valley
hellebore
euphorbia
ivy
There's also a lovely thing I can't remember the name of, low growing, heart shaped variegated leaves on hair thin stems that quiver in the wind - will try and find out the name of it.
All of the above do well in my very, very shady bed - at the foot of a fence, which is overshadowed by 5 foot of laurel hedge from next door, and NEVER gets direct sun.
One advantage of the shade is that most weeds don't like it!