Colbert takes his place in the Smithsonian -- between the bathrooms

The word is "Smile."
Maybe those guys at the Smithsonian Institute have a sense of humor after all.
They've made a portrait of Stephen Colbert part of their immortal collection. Temporarily. Or so they say.
It now hangs on the wall of the venerable institution, reports the New York Daily News. In between the bathrooms.
Really.
And that's today's Word.