'Lost' star Ken Leung has been found by 'The Good Wife.' Leung and 'The Big C''s John Benjamin Hickey have been tapped to guest star in the March 1 episode.

According to TV Guide, Leung's character will sue a social network, claiming it failed to protect his privacy. When his character posts an anonymous blog item about democracy in China, he's captured and tortured by the government. Lockhart, Gardner & Bond will represent him.

Hickey will play the CEO of the social networking site.

In other casting news ...

• Hilarie Burton has been promoted to series regular on 'White Collar.' The former 'One Tree Hill' star will be a regular in season 3. [TVLine]

• Olympic gold medalist Nastia Luikin will guest on 'Hellcats.' Liukin will play herself and introduce the cheerleading squad at a fund-raising event. [TV Guide]

• In other 'Hellcats' news, Camille Sullivan will also appear on The CW show. Sullivan will recur on the series as Emily, an old rival of Vanessa's. [TVLine]

• Sunkrish Bala, star of the short-lived 'Notes From the Underbelly,' has landed a role on MTV's 'I Just Want My Pants Back.' Bala will play Bobby in the series, based on the David Rosen novel of the same name. [Hollywood Reporter]