Yvonne Strahovski (née Strzechowski) is an Australian actress. Her breakout role as CIA agent Sarah Walker came in 2007 on the NBC series Chuck. Strahovski also portrayed Hannah McKay on seasons ...

The Big Bang Theory is the hit sitcom co-created by Chuck Lorre and Bill Prady for the broadcast network CBS. The series is hailed as one of the best in its genre in recent decades on television ...