Eric Damon Smith enjoys a busy acting life in Chicago. But he says he owes a lot to Milwaukee. He spent nine months during the 2002-03 season as an intern at the Milwaukee Repertory Theater. Now, after 10 years, Smith is making a triumphant - and hilarious - return to the Milwaukee Rep stage as Bud Davenport in "Gutenberg! The Musical!" which premiered last night at the Stackner Cabaret.