15. Pilot
Season 1, Episode 1 The first entry on the list is the very first episode which aired September 2007. It introduces the characters we've come to know and love, the loveable nerds and the hot girl-next-door. The episode shows roommates Leonard and Sheldon, and their friends Howard and Raj, meeting their new neighbour Penny. Leonard is instantly infatuated and offers to pick up Penny's TV from her hulk of an ex-boyfriend Kurt. He and Sheldon are unsuccessful and return without their trousers. As this is the pilot some of the character traits and dialogue conflicts with later stories and characteristics, but this is a common thing for pilots as the writers and actors do not know what direction the stories are going to go or how successful the show will be.
Best Moment: Leonard and Sheldon are visiting the sperm bank and Leonard annoys the receptionist by solving her crossword puzzle in a matter of seconds.