Aaron Eckhart to Gus Kahn in 6 Steps
- Aaron Eckhart is in the cast of The Black Dahlia
- The Black Dahlia was directed by Brian De Palma
- Brian De Palma directed Carrie
- Carrie cast includes John Travolta
- John Travolta is one of many artists that recorded It Had to Be You
- It Had to Be You was written by Gus Kahn