Cast & creator
Zachary Bostrom
Best known for CSI: Crime Scene Investigation, Beverly Hills, 90210, Knots Landing
Zachary Bostrom is an American actor. As a child actor, he's known for his roles as Peewee in the film Dennis the Menace and as Ernie Henderson, the youngest child, on the series Harry and the Henderson.
Also known as: Zach Bostrom
Movies
10
film credits
Series
12
television credits
Career
22
1979–2026 · acting roles
Credit score
6.5
average across scored titles
Signature credits
Known for
Across film & television
Filmography (22)
Showing 22 of 22 credits
Series
★ 7.6
CSI: Crime Scene Investigation
Young Frank
2000
Series
★ 7.3
Beverly Hills, 90210
Henry Regan
1990
Series
★ 6.9
Knots Landing
Waiter
1979
Series
★ 6.9
Will & Grace
Josh
1998
Series
★ 7.4
Home Improvement
Chad
1991
Series
★ 7.5
Full House
Jimmy
1987
Series
★ 7.1
Power Rangers
Mitch
1993
Series
★ 5.9
Close to Home
Paul Harris
2005
Series
★ 7.2
Timeless
Dennis Langford
2016
Series
★ 7.4
Parker Lewis Can't Lose
Bobby
1990
Series
★ 5.8
Harry and the Hendersons
Ernie Henderson
1991
Movie
★ 6.6
Dinosaur
Additional Voices (voice)
2000
Series
★ 5.7
Training Day
Stephen
2017
Movie
★ 6.1
Johnny Tsunami
Brett
1999
Movie
★ 6.2
A Very Brady Christmas
Kevin Brady
1988
Movie
★ 5.7
Aliens for Breakfast
Dorf
1994T
Movie
★ 5.9
Timmy's Gift: A Precious Moments Christmas
Timmy (voice)
1991
Movie
★ 5.2
Night of the Wolf
Jesse McNichol
2002
Movie
★ 5.3
Dennis the Menace
Peewee
1987W
Movie
★ 7.0
Waiting for the Wind
Charlie
1991
Movie
★ 5.0
Armed and Innocent
Davey
1994
Movie
A Christmas Cookie Caper: A Puzzle Time Mystery
Sam
2026