In the pilot, life is about to change for two geniuses, Sheldon and Leonard when the beautiful Penny moves in across the hall. Leonard sees potential love interest in Penny and offers to retrieve her television from her ex-boyfriend.
Leonard: At least I didn't have to invent 26 dimensions just to make the math come out. Sheldon: I didn't invent them, they are there! Leonard: In what universe? Sheldon: In all of them, that's the point