Carradine, who was part of an acting family including his father and brothers, is most famous for his role in the TV show Kung Fu and more recently as the title character in Quentin Tarantino's Kill Bill (Vols. 1 and 2).
Carradine is survived by his wife and four children. [BBC]
UPDATE: Additional details about the placement of the ropes has been released by Bangkok police and may point to an accidental death. An autopsy was completed Friday, but results have not yet been released. [Associated Press via Yahoo! News]