Knight co-starred in the off-Broadway play Wrong Turn at Lungfish, and he appeared in the ABC movie for television She Stood Alone: The Tailhook Scandal, and in the off-Broadway Cakewalk with Linda Lavin.
In 1900, a year after the success of Joplin's "Maple Leaf Rag", he published his most successful and enduring song "Creole Belles", a rag or cakewalk that sold more than a million copies in sheet music.