The Big Bang Theory(2007)
S12 E25 - Episode 25
S12 E24 - Unraveling the Mystery: A Big Bang Farewell
S12 E23 - The Change Constant / The Stockholm Syndrome
Videos: Trailers, Teasers, Featurettes
The sitcom is centered on five characters living in Pasadena, California: roommates Leonard Hofstadter and Sheldon Cooper; Penny, a waitress and aspiring actress who lives across the hall; and Leonard and Sheldon's equally geeky and socially awkward friends and co-workers, mechanical engineer Howard Wolowitz and astrophysicist Raj Koothrappali. The geekiness and intellect of the four guys is contrasted for comic effect with Penny's social skills and common sense.
The Big Bang Theory - watch online: streaming, buy or rent
Currently you are able to watch "The Big Bang Theory" streaming on iflix.