He had roles in the films The Social Network and J. Edgar. He also played the titular character in The Lone Ranger and portrayed Prince Andrew Alcot in the 2012 film, Mirror Mirror.
He played Billy Graham in the 2008 film, Billy: The Early Years.
He starred in the film Mirror Mirror alongside Nathan Lane.
He made appearances in the television series, Veronica Mars, Desperate Hoswewives, and Reaper. He appeared in the 2006 re-make of Flicka.
His mother Dru Ann worked as a bank loan officer and his father Michael Armand Hammer was the owner of Armand Hammer Productions. He married Elizabeth Chambers in 2010 and the couple welcomed a daughter in December 2014.
- The meaning of the name Hammer: Maker Of Hammers