Robert Duvall was featured in numerous films.
Robert Duvall . Duvall began appearing in theatre during the late 1950s , moving into television and film roles during the early 1960s , playing Boo Radley in To Kill a Mockingbird ( 1962 ) and appearing in Captain Newman , M.D. ( 1963 ) . He landed many of his most famous roles during the early 1970s , such as Major Frank Burns in the blockbuster comedy MASH ( 1970 ) and the lead role in THX 1138 ( 1971 ) , as well as Horton Foote 's adaptation of William Faulkner 's Tomorrow ( 1972 ) , which was developed at The Actors Studio and is Duvall 's personal favorite . This was followed by a series of critically lauded performances in commercially successful films . Since then , Duvall has continued to act in both film and television with such productions as Tender Mercies ( 1983 ) , The Natural ( 1984 ) , Colors ( 1988 ) , the television mini-series Lonesome Dove ( 1989 ) , Stalin ( 1992 ) , The Man Who Captured Eichmann ( 1996 ) , A Family Thing ( 1996 ) , The Apostle ( 1997 ) , A Civil Action ( 1998 ) , Deep Impact ( 1998 ) , Gods and Generals ( 2003 ) , Secondhand Lions ( 2003 ) , Broken Trail ( 2006 ) , Get Low ( 2010 ) , Jack Reacher ( 2012 ) , and The Judge ( 2014 ) .