Yes, Dima Bilan has acted in films. He made his debut in the 2004 film Nochnoy Dozor (Night Watch), and has since appeared in several other films, including the 2005 sequel Dnevnoy Dozor (Day Watch), the 2007 film The Princess and the Frog, and the 2012 film The Snow Queen.
Dima Bilan: The Melodious Maestro - How Well Do You Know Him?