Brunnera, Hosta, Omphalodes, Geranium nodusum/sylvaticum/maccrorrhizum, Pulmonaria, Convallaria majus, Anemone nemorosa, Hacquetia epicatis, Cardamine, Pachyphragma, Actaea simplex, Ajuga, Aconitum, Anemone japonica, Lamium, Waldsteinia - those are a few off the top of my head. Clematis 'Nelly Moser' prefers some shade, too, or her flowers fade.

Try a browse through the Goypedia under 'S' for shade plants, as well.

Flowering shrubs for shade include Mahonia aquifolium, Sarcococca varieties, Ribes sanguinam