appeared in the film A Cinderella Story, starring Hilary Duff and Chad Michael Murray. Helberg played the minor role of Simon in George Clooney's 2005 film Good Night, and Good Luck, where he had one line. In 2005, he had a bit part on Arrested Development as Jeff, an employee of the film studio where Maeby worked. From 2006 to 2007, he had a minor supporting role as Alex Dwyer in the drama Studio 60 on the Sunset Strip. In 2006, he appeared in a series of comical TV commercials for Richard Branson's UK financial services company Virgin Money. He played a small role in the 2007 film Walk Hard: The Dewey Cox Story as a Jewish record producer. In 2007, Helberg was cast as Howard Wolowitz, in the CBS comedy series The Big Bang Theory. In 2004, Helberg portrayed Seth Tobin in Joey, a character similar to Howard. He appeared as the character Moist in Dr. Horrible's Sing-Along Blog, and had a small role in the pilot episode of the Judd Apatow-produced sitcom Undeclared. In the 2009 Coen brothers film A Serious Man, he played junior Rabbi Scott Ginsler. He had a minor role in the season 4 finale of The Guild as one of the Game Masters. In 2016, Helberg starred alongside Meryl Streep and Hugh Grant in Florence Foster Jenkins, directed by Stephen Frears; he played pianist Cosmé McMoon and his performance was nominated for the Golden Globe Award for Best Supporting Actor – Motion Picture. Not only did Helberg act in the film, he also played the piano. Helberg next starred in Annette, opposite Adam Driver. Forbes placed him third in its world's highest-paid TV actors list in 2018, his revenues rising to $23.5 million in that year. Personal life Helberg married actress Jocelyn Towne, the niece of screenwriter Robert Towne, on July 7, 2007. They have a daughter and a son. Helberg has been friends with Nathan Hamill, son of actor Mark Hamill, since he was 9 years old. Helberg has been friends with Jason Ritter since he was 12 years old. They went to college together and continue to work together when given the opportunity. Through his wife Jocelyn (who became a French citizen in 2013 through her French mother), Helberg himself became a French citizen to obtain the role of the Conductor in French cult director Leos Carax’s English-language debut Annette, which opened