Hungry deer will eat almost anything during a drought or a severe winter, but here are a few plants that are somewhat deer resistant. Perennials include Astilbe, Bugleweed (Ajuga reptans), Butterfly bush (Buddleia davidii), Cardinal flower (Lobelia cardinalis), Delphinium, Foxglove, Lenten rose (Helleborus orientalis), Lungwort (Pulmonaria cvs.), Lupine, Rusian sage (Perovskia cvs.) and daffodils.
Shrubs and trees, including evergreens, are:
American arborvitae (Thuja occidentalis)
Bald cypress (Taxodium distichum)
Barberry (Berberis spp.)
Boxwood (Buxus spp.)
European beech (Fagus sylvatica)
Oregon grapeholly (Mahonia aquifolium)
White, Norway and Colorado spruces (Picea spp.)
As for annuals, some people say they have luck with marigolds, but I think deer would eat most annuals - and lilacs, too.