Eric Lange's acting career hit its peak in the late 2000s, playing teachers, reporters, lawyers, and doctors in a variety of popular TV series. In ABC's long-running cult show "Lost", Lange had a fairly minor part as Stuart Radzinsky in the penultimate season--nevertheless, it was his first recurring character in a popular television series. After many one-off roles in various sitcoms and crime dramas, mostly as teachers, witnesses, or white collar-types, Lange landed a role in an HBO made-for-TV biopic "You Don't Know Jack", starring Al Pacino as Jack Kevorkian. In the film, Lange played John Skrzynski, the prosecutor who leads a merciless campaign in a case against Dr. Kevorkian in court, calling Kevorkian, among other extreme things, a "medical hit man." The same year, Lange co-starred with Diane Lane in the Disney horse racing-themed period piece "Secretariat" as Andy Beyer, a reporter who becomes an iconic expert in the sport. Lange played a reporter once again in Showtime's comedy series "Weeds". In Nickelodeon's tween sitcom "Victorious", Lange played a barefoot, New Age improv-acting teacher, Mr. Sikowitz, at the series' arts high school.