Source: http://the-big-bang-theory.com/
CBS has announced the details of episode 2.20, which will air April 13th and guest star Ugly Betty‘s Kevin Sussman as Penny’s geeky love-interest.
"The Hofstadter Isotope" – While a fellow comic book-loving pal of the guys romances Penny, Leonard and Wolowitz venture out into the world of "Ladies’ Night" at a local bar, on THE BIG BANG THEORY, Monday, April 13 (8:00-8:30 PM, ET/PT) on the CBS Television Network.
