Michael Imperioli (born March 26, 1966) is an American actor, writer, director and producer. He is known for his role as Christopher Moltisanti on The Sopranos, for which he won the Primetime Emmy Award for Outstanding Supporting Actor in a Drama Series in 2004. He also appeared in the TV drama series Law & Order as Detective Nick Falco. Imperioli spent the 2008-2009 television season as Detective Ray Carling in the US version of Life on Mars.