Eric Millegan has appeared on Law & Order: Criminal Intent and Sidney Lumet's courtroom drama 100 Centre Street. In film, he starred in the erotic independent film On_Line, which was the Official Selection of the Berlin Film Festival, Sundance Film Festival and Cinequest Film Festival.

Millegan also appeared in the independent film The Phobic, for director Margo Romero. In the psycho-thriller he plays a brilliant programmer who develops new software to analyze subjects before treatment but obsesses over one patient with a very dark past.

Before making his break in Los Angeles, Millegan spent 10 years paying his dues in the theater. He starred as "Harold" in the new musical production of Harold and Maude, at the Paper Mill Playhouse in New Jersey. His New York theater credits include the Broadway revival of Jesus Christ Superstar, the Encores presentation of Hair at City Center (in which he sang the "Aquarius" solo), and the New York premiere of Dead Man Walking at Lincoln Center. He has played lead roles in workshops and readings, including The Wayside Inn, Uncle Broadway, Barry Mann & Cynthia Weil's Mask, and the off-Broadway hits Spring Awakening and Altar Boyz. His regional theater experience includes roles at the Guthrie Theater, Cincinnati Playhouse In the Park and The Repertory Theater of St. Louis.

His diverse career has also includes playing a dancing polar bear in the Radio City Christmas Spectacular in Myrtle Beach, South Carolina, writing a sports column as "The Fan" of the Portland Trail Blazers for OregonLive.com, hosting Broadway La Cage in Atlantic City, and singing "God Bless America" during the 7th inning stretch at Shea Stadium.

Millegan is an alumnus of the Interlochen Arts Camp and holds a Bachelor of Fine Arts degree in Musical Theater from the University of Michigan.