
Acting
Robert Reed Carradine (March 24, 1954 – February 23, 2026) was an American actor. He was a member of the Carradine family, with David Carradine and Keith Carradine being his siblings.
He was best known for portraying Lewis Skolnick in the successful Revenge of the Nerds series of comedy films and Sam McGuire on the Disney Channel sitcom Lizzie McGuire.
Description above from the Wikipedia article Robert Carradine, licensed under CC-BY-SA, full list of contributors on Wikipedia

Skate to Hell
as Virgil

Was Once a Hero
as Doc Jennings

The Cowboy Killer
as Detective Flannery

Let's Call the Whole Thing Off
as Bill

The Night They Came Home
as Bart

High Holiday
as Hunter Pearson

Human Zoo
as Producer
Hell in the Hallways: The Making of Massacre at Central High
as Himself

Bill Tilghman and the Outlaws
as Frank James

American Christmas
as Danny

MEDINAH
7 ep.

King of the Nerds
as Self - Host · 24 ep.

Celebrity Ghost Stories
as Self · 1 ep.

Robot Chicken
as Lewis skolnick/man · 1 ep.

Law & Order: Criminal Intent
as David Blake / Roger Withers · 1 ep.

Lizzie McGuire
as Sam McGuire · 65 ep.

The Practice
as Dr. Fred Manheim · 1 ep.

Fast Track
2 ep.

Nash Bridges
as Dr. Bruce Hartman · 1 ep.

The Pretender
as Sheriff Dwight Kunkle · 1 ep.
Revenge of the Nerds
1984