Lloyd Bridges
Lloyd Bridges is super popular for his role in Airplane! but most people didn't know that he was actually blacklisted from Hollywood for a short time. Like many actors in the '50s, he was blacklisted for his apparent ties with communism and socialism. He was open about his liberal views, which raised suspicions of ties with Russia and communism. After 10 years, he was finally able to convince folks that he wasn't a Russian spy and went on to have a great career.
Lee Grant
Despite Lee Grant becoming extremely popular, she was still under the suspicion of being "unamerican." She was asked to testify against her husband to the House Un-American Activities Committee, which she refused to do. This was an incredibly difficult time for her. Somehow, she and her husband were able to clear themselves of any wrongdoing.