who plays russ in christmas vacation

Russ is played by Johnny Galecki in the film "National Lampoon's Christmas Vacation". He is the son of Clark Griswold, the main character of the film, and plays an important role in the story. Russ is portrayed as a sarcastic and witty character, often causing trouble or being the subject of Clark's frustration. He is also shown to have a close relationship with his cousin Audrey, who is one of the few family members who understands him.