May 31 is the 200th anniversary of the birth of Walt Whitman. One of the most influential American poets, his life and work is being celebrated around the country and around the world. The Northwest Film Center is hosting a screening tonight, highlighting his unique place in American literature and culture. We talk with Oregon poets, Kim Stafford, Wendy Willis and Harold Johnson about how Whitman affected their work and about how Song of Myself — his most famous poem — resonates two centuries after the poet’s birth.