Billy Crudup is an American actor known for his versatility and ability to bring complex, multifaceted characters to life. His film career took off in the late 1990s with notable roles, which he consolidated with memorable performances.

Among his most iconic films are *Almost Famous* (2000), where he shone in the role of charismatic guitarist Russell Hammond, and *Without Limits* (1998), in which he played athlete Steve Prefontaine. He demonstrated his range in blockbusters such as *Mission: Impossible III* (2006) and in the role of Doctor Manhattan in *Watchmen* (2009).

Crudup is often cast as intelligent, sometimes enigmatic or morally ambiguous characters, elevating even supporting roles with his intense and measured presence. His filmography also includes titles such as *Public Enemies* (2009) and *Alien: Covenant* (2017).