Girlfriend's Number

When Raj’s girlfriend abandons him, he feels self-pity.

Parking Spot Externalities

Howard and Sheldon feud over a parking spot.

Sheldon plays Stephen Hawking in a game of Words with Friends.

Howard buys the guys a “Fantastic 4” comic book to celebrate his upcoming marriage.

Howard complains about the release of a new product “Wild West Witches”.

The guys discuss the choice between downloading comic books online v coming into the store.

Howard tells his friends that NASA has chosen his team’s design for the deep field space telescope that is going on the International Space Station.

Howard builds a machine which enables 2 people to simulate a human kiss.

Howard's mom passes out after learning about Howard and Bernadette's engagement.

The guys talk substitute goods in the car.