sean patrick astin (né duke; february 25, 1971) is an american actor, voice actor, screenwriter, director, producer, family man, author, marathon runner, political activist and philanthropist who is well known for his film debut portraying mikey in steven spielberg's the goonies (1985), for playing the title role in the critically acclaimed rudy (1993), and for his role as the beloved sam gamgee in the academy award winning trilogy, the lord of the rings: the fellowship of the ring (2001), the lord of the rings: the two towers (2002), and the lord of the rings: the return of the king (2003). astin was born sean patrick duke on february 25, 1971 in santa monica, california. his mother was actress patty duke. at the time of his birth, his biological father was believed to be entertainer desi arnaz jr., but astin discovered through a dna test in the 1990s that his biological father is music promoter michael tell, who was married to patty duke in 1970. sean was raised by his stepfather, actor john astin, who married patty duke in 1972 and whose surname sean took. sean's mother was of irish and more distant german ancestry, and sean's biological father is of austrian jewish and polish jewish descent. at age nine, sean starred with his mother in the after-school special please don't hit me, mom (1981). followed by sean's feature debut the goonies (1985) and since then, he has had a steady stream of roles. starring in toy soldiers (1991), where the day takes you (1992), rudy (1993) and harrison bergeron (1995). he directed and co-produced the short film kangaroo court (1994), which was nominated in the best short film category at the 67th annual academy awards (1995). sean's adoptive father john astin was nominated for the same award in 1969. sean experienced another career breakthrough with his role as the epitome of loyal sidekicks, samwise gamgee, in peter jackson's the lord of the rings trilogy, released in 2001, 2002 and 2003. along with the many awards bestowed upon the trilogy (particularly its final installment the return of the king), sean received nominations for his own performance. he took home the saturn award for best supporting actor, and awards from the las vegas film critics society, the seattle film critics, the utah film critics association, and the phoenix film critics society.