million per episode in 2010. He was fired earlier this year. His television and film credits include "Spin City" (2000-02) and "Wall Street" (1987).

Helberg, who recently sold a home in Los Angeles, is one of the five central characters in the ensemble comedy "The Big Bang Theory," which started in 2007. The 30-year-old starred in "Derek and Simon: The Show" (2007).

Public records show the property was purchased for $2.575 million in 2007, before Mueller and Sheen's 2008 marriage. After the birth of twin sons in 2009, they listed the house at $3.697 million. Weeks or months may pass before sale prices appear in public records.

A quiet sale, not a big bang

Actress Kaley Cuoco, who costars as the neighbor of a pair of socially inept physicists on "The BigBang Theory," has sold her home in Sherman Oaks for $822,500.

The Spanish-style house was built in 1937 but has been updated. Features include distressed hardwood floors, French doors that open to a covered patio and interior arches between living spaces. There are three bedrooms and three bathrooms in 2,171 square feet.

Cuoco, 25, has starred on the sitcom since 2007. The show has been renewed through the 2013-14 season.

She was also a regular on the series "Charmed" (2005-06) and "8 Simple Rules" (2002-05). She is in "The Last Ride," a film about country singer Hank Williams set for wide release in January.

The property was purchased in 2005 for $1.355 million, according to public records.

Stephanie Vitacco of Coldwell Banker was the listing agent. Eric Lieberman of John Aaroe Group represented