In 1939, Columbia produced a 12-part Mandrake the Magician serial, based on the King Features strip, starring Warren Hull as Mandrake and Al Kikume as Lothar. The serial is available on DVD.
An unauthorized Mandrake movie produced in Turkey was made in 1967, Mandrake Killing'e karsi (Mandrake against Killing (comics)), directed by Oksal Pekmezoglu and starring Güven Erte as Mandrake.
Anthony Herrera had the title role in the TV movie Mandrake (1979) with Ji-Tu Cumbuka as Lothar. Magician Harry Blackstone Jr. was featured in the cast.
In 2007, it was announced that Baldwin Entertainment Group and Hyde Park Entertainment purchased rights to make a Mandrake movie, to be directed by Mimi Leder. The two companies own the rights to Lee Falk's The Phantom. Jonathan Rhys Meyers was originally on board the project as the title character with Chuck Russell announced as director. In 2009, Hayden Christensen replaced Rhys Meyers in the title role of the film, with Djimon Honsou co-starring and Mimi Leder directing. Warner Bros announced that they are developing the film version of Mandrake.
The plot of the film In Time, a 2011 American science fiction film starring Justin Timberlake and Amanda Seyfried, is based on one of Mandrake's short stories that appeared in the December 1975 issue of Playboy. It portrays a place where time is the currency for its inhabitants and when you run out of time, you die. Lee Falk did not receive any film credits for the movie In Time.
Taken from Wikipedia
Direct Link to info is: http://en.wikipedia.org/wiki/Mandrake_the_Magician