TMDb/Blue Mountain State Celebrity Blue Mountain State and its movie leave Netflix May 2026. Catch Thad Castle's iconic antics before they're gone forever. April 26, 2026 AceShowbiz - Before Alan Ritchson became a leading figure in action franchises and a popular choice for tough-guy roles, he first gained widespread recognition as Thad Castle. This role, which many fans still consider one of his most memorable performances, was central to the cult hit series Blue Mountain State.