Complex sentence: Nimoy provided the voice of Spock as a guest star in a Season 5 episode of the CBS sitcom "The Big Bang Theory" titled "The Transporter Malfunction", which aired on March 29,2012.
Split into simpler sentences: Nimoy provided the voice of Spock as a guest star in a Season 5 episode of the CBS sitcom, "The Big Bang Theory". The episode is titled "The Transporter Malfunction" and aired on March 29,2012.