The key in picking the right plants for your scenario here is determining whether you have dry shade or moist shade. This is a key factor in all plant choices, but especially in shade, as so many shady places do tend to have at least somewhat moist soil. Here are some suggestions you could start looking at: taller ferns like ostrich, dixie wood ferns, and royal ferns, arunucus (aka goatsbeard), tricyrtis (toadlily), acanthus, and astilbe.