Weinberg was born in Los Angeles, California to a Jewish American family of Romanian, Ukrainian, Russian and Polish descent.[citation needed] His younger brother is Mike Weinberg, who is also an actor.

Weinberg started acting in the late 1990s, appearing mostly on television. He had a minor role in the 2000 film, X-Men, appeared in the 2002 comedy, The Hot Chick, and voiced "Young Simba" in the 2004 direct-to-video animated film, The Lion King 1 1/2, replacing 23-year old Jonathan Taylor Thomas. He starred in the short 3-D film, R. L. Stine's Haunted Lighthouse, which debuted in several theme parks across the United States in 2003, where it is still playing. Weinberg also appeared in an episode of Friends, called "The One Where Rachel Smokes" as Raymond, who is paired with Joey as they vie to be selected to appear in a soup commercial. His latest role was in The Benchwarmers, a comedy released in April of 2006.

Filmography

The Benchwarmers (2006) - Kyle
The Lion King 1½ (2004) - voice of young Simba
The O'Keefes TV series (2003) - Mark O'Keefe
Haunted Lighthouse (2003) - Mike
Who's Your Daddy? (2003) - 8 year old boy
The Hot Chick (2002) - "Booger" Spencer
Bad Boy (2002) - 7 year old dawg
"Big Bad Mackleroy" (2002) - soup boy
ER (2002) - Douglas Leeman in the "Beyond Repair" episode
Freakylinks (2001) - Sam Lowe in the "The Final Word" and "Me And My Shadow" episodes
Touched by an Angel (2001) - Mickey in the "I Am An Angel" episode
The Last Dance (2000) - Alex Cope
X-Men (2000) - Tommy
An American Daughter (2000) - Nicholas
Spooky House (2000) - Max
Chicken Soup For The Soul (1999) - the "From The Heart" episode
Friends (1999) - Raymond in the "The One Where Rachel Smokes" episode
Eli's Theory (1999) - Eli
Ellen (1998) - Jack in the "Hospital" episode