who played russ in national lampoon's christmas vacation

Russ is the middle child in the Griswold family who was played by Johnny Galecki. He is a fun-loving and mischievous kid who always seems to be getting into trouble. Russ is also a loyal friend to his younger brother, Rocky, and is always there to defend him when he needs it. In the movie, Russ helps his dad, Clark, with the Christmas light installation, but he also ends up causing some headaches along the way. He is definitely a memorable character and an important part of the Griswold family.