Chairman of The Walt Disney Studios [December 2013].
Hosted Salon Seminars at his house, with his wife Cindy Harrell, during the late 1980s, for the USC Institute for the Study of Women and Men in Society.
President and COO, Warner Bros. Entertainment Inc (octubre de 1999)
One of the founding members of Castle Rock Entertainment along with Rob Reiner, among others. The company produced such acclaimed films as Algunos hombres buenos (1992) and Cadena perpetua (1994). Horn became President & COO of Warners in 1999.
