Nieboer's thirty-three plays cover a wide range of subjects and styles. Producers include the American Conservatory Theatre, New Dramatists, Bay Area Playwrights Festival, Great American History Theatre, Intersection, Magic Theatre, Minnesota Opera and Winnipeg Folk Festival. In 1983 he co-founded lesser mortals, a theatre/research/performance group, and continues to serve as their artistic director and rhythm guitarist. He has received playwriting grants from the California Arts Council, the Minnesota State Arts Board and the National Endowment for the Arts.. His essays appear in Drama Review, American Theatre, and Theatre Forum. He has taught playwriting at the University of California-Davis and the University of California-San Diego and served as a Visiting Professor of English at NKJO, a teachers training college in Bydgoszcz, Poland. Currently he resides on a five-acre compound in rural Kanabec County where he conducts experiments in organic horticulture and avant-garde landscaping, and collects cultural artifacts (i.e., junk). He teaches at Nay Ah Shing, the tribal school of the Mille Lacs Band of Ojibwe and serves as moderator of The Artist’s Bookshelf, the monthly book club of the Walker Art Center.