His best - known film role was as Inigo Montoya in '' The Princess Bride '' in 1987 ; his other film credits include '' Alien Nation '' ( 1988 ) , '' Yentl '' ( 1983 ) , and '' Dick Tracy '' ( 1990 ) .
His best - known film role is as Inigo Montoya in '' The Princess Bride '' in 1987 . 
 His other film credits include '' Alien Nation '' ( 1988 ) , '' Yentl '' ( 1983 ) , and '' Dick Tracy '' ( 1990 ) .