Robert Wagner was a dashing young leading man in the 1950s, when he starred in movies like What Price Glory (1952, with James Cagney) and Prince Valiant (1954, with Janet Leigh). By the late 1960s he had become a regular on TV, where he starred in three lighthearted action series: It Takes a Thief (1968-70), Switch (1975-78) and Hart to Hart (1979-84). In the 1990s Wagner made a comeback as a dapper supporting man, sometimes the heavy but more often playing for laughs; he was Dr. Evil's enabler, Number Two, in Austin Powers: International Man of Mystery (1997) and its two sequels (1999 and 2002).

http://en.wikipedia.org/wiki/Robert_Wagner