On Season 9 of The Big Bang Theory, Penny (Kaley Cuoco) says she get over the fact that her now-husband Leonard (Johnny Galecki) kissed his colleague Mandy Chow during his expedition to the North Sea. Penny and Leonard weren’t engaged at the time. But that doesn’t mean Penny has forgotten the kiss. And Leonard does feel guilty about it. Neither of them can shake it off. So in an attempt to feel better about the incident, Leonard asks Mandy to meet at a cafe.
Mandy is portrayed by Melissa Tang. The 30-year-old actress from Los Angeles is best known for her recurring roles on other CBS series including Extant (Mei Fong) and Mom (Suzanne). She also appeared in the films Beginners with Ewan McGregor and A Good Day to Die Hard with Bruce Willis. The Big Bang Theory airs Mondays at 8pm on CBS.