there are many which PREFER sun but will also do quite well in shadey situation Amelanchier, cercis, nandina, cornus florida, hydrangeas, Rhododendron, azaleas, piers, stewartia, mahonia, etc etc

You will in general have best blooming if you plant them where there is at least some sun. I will often plant in brighter areas and along the edges of my woods to get the best bloom, but many plants will grow loosely in deeper shade. What is your soil like, both in texture and pH? I have acid fine sandy loam, and if your area is at all similar to mine, I will have lots of suggestions, but they all require acid soil.

Does lightly wooded = dappled shade? Then most all of the shrubs mentioned by shadeyplace will do although some require acid soil-- I suggest viburnums, so many to choose from.