DC>> Kurt Russll was most definitely a child star.

 RS>> When he was a child star, he made appearances on
"Gilligans Island"
 RS>> and "Lost In Space."

 DC>> He was in _Gilligan's_?

yup...

"Gilligan's Island" (1964) playing "Jungle Boy" in
episode: "Gilligan Meets Jungle Boy" (episode # 1.19) 6 February
1965


 RS> I think so.
 RS> I know he was on "Lost In Space."

yup, that, too...

20. "Lost in Space" (1965) playing "Quano" in episode:
"The Challenge" (episode # 1.22) 2 March 1966

 DC>> IIRC, he also did some Disney movies.

 RS> Yup, especially this series of movies he did when he was a
 RS> teenager, all taking place at some college and he's a whiz
 RS> kid. One of them was called "The Computer Wore Tennis
 RS> Shoes."

here's what i find about all his movie appearances...

# Miracle (2004) (post-production) .... Herb Brooks
# Dark Blue (2002) .... Eldon Perry
# Interstate 60 (2002) .... Captain Ives
... aka I-60 (2002) (USA: promotional abbreviation)
... aka Interstate 60: Episodes of the Road (2002) (USA)
# Vanilla Sky (2001) .... Dr. Curtis McCabe
# 3000 Miles to Graceland (2001) .... Michael Zane
# Soldier (1998) .... Sgt. Todd 3465
# Breakdown (1997) .... Jeff Taylor
# Escape from L.A. (1996) .... Snake Plissken
... aka John Carpenter's Escape from L.A. (1996) (USA: complete title)
# Executive Decision (1996) .... Dr. David Grant
... aka Critical Decision (1996)
# Stargate (1994) .... Colonel Jonathan 'Jack' O'Neil
... aka Stargate, la porte des ‚toiles (1995) (France)
# Forrest Gump (1994) (uncredited) (voice) .... Elvis Presley
# Tombstone (1993) .... Wyatt Earp
# Captain Ron (1992) .... Captain Ron
# Unlawful Entry (1992) .... Michael Carr
# Voices that Care (1991) (TV) .... Choir Member
# Backdraft (1991) .... Lieutenant Stephen 'Bull' McCaffrey & Dennis McCaffrey
# Tango & Cash (1989) .... Gabriel 'Gabe' Cash
# Winter People (1989) .... Wayland Jackson
# Tequila Sunrise (1988) .... Det. Lt. Nicholas 'Nick' Frescia
# Overboard (1987) .... Dean Proffitt
# Big Trouble in Little China (1986) .... Jack Burton
... aka John Carpenter's Big Trouble in Little China (1986) (USA: complete title)
# Best of Times, The (1986) .... Reno Hightower
# Mean Season, The (1985) .... Malcolm Anderson
# Swing Shift (1984) .... Lucky/Mike
# Silkwood (1983) .... Drew Stephens
# Thing, The (1982) .... R.J. MacReady
... aka John Carpenter's The Thing (1982) (USA: complete title)
# Fox and the Hound, The (1981) (voice) .... Adult Copper
# Escape from New York (1981) .... Snake Plissken
... aka John Carpenter's Escape from New York (1981) (USA: complete title)
# Used Cars (1980) .... Rudolph 'Rudy' Russo
# Amber Waves (1980) (TV) .... Laurence Kendall
# Elvis (1979) (TV) .... Elvis Presley
# Christmas Miracle in Caufield, U.S.A. (1977) (TV) .... Johnny
... aka Christmas Coal Mine Miracle, The (1977) (TV)
# Captive: The Longest Drive 2, The (1976) .... Morgan 'Two Persons' Bodeen
# Quest: The Longest Drive, The (1976) (TV) .... Morgan 'Two Persons' Beaudine
# "Quest, The" (1976) TV Series .... Morgan Beaudine
# Quest, The (1976) (TV) .... Morgan 'Two Persons' Bodeen
... aka Longest Drive, The (1976) (TV) (USA: video title)
# Deadly Tower, The (1975) (TV) .... Charles Joseph Whitman
... aka Sniper (1975) (TV)
# Search for the Gods (1975) (TV) .... Shan Mullins
# Strongest Man in the World, The (1975) .... Dexter Riley
# Superdad (1974) .... Bart
# "New Land, The" (1974) TV Series .... Bo Larsen
# Charley and the Angel (1973) .... Ray Ferris
# Now You See Him, Now You Don't (1972) .... Dexter Riley
# Fools' Parade (1971) .... Johnny Jesus
... aka Dynamite Man from Glory Jail (1971) (UK)
# Barefoot Executive, The (1971) .... Steven Post
# Dad... Can I Borrow the Car? (1970) (TV) .... Narrator
# Computer Wore Tennis Shoes, The (1969) .... Dexter Riley
# Guns in the Heather (1968) .... Rich
... aka Secret of Boyne Castle, The (1968)
... aka Spy Busters (1968)
# Horse in the Gray Flannel Suit, The (1968) .... Ronnie Gardner
# One and Only, Genuine, Original Family Band, The (1968) .... Sidney Bower
# Mosby's Marauders (1967) .... Pvt. Willie Prentiss
... aka Willie and the Yank (1967)
# Follow Me, Boys! (1966) .... Whitey
# Guns of Diablo (1964) (TV) .... Jamie McPheeters
# "Travels of Jaimie McPheeters, The" (1963) TV Series .... Jamie
McPheeters
# It Happened at the World's Fair (1963) (uncredited) .... Boy Who Kicks Mike
# "Sugarfoot" (1957) TV Series
... aka "Tenderfoot" (1957) (UK)

and there's 31 notable television series appearances, counting the two
listed above...

)\/(ark