Amy plays the game's theme music.
Howard suggests that he and Bernadette "learn the final number from 'Dirty Dancing'" for their wedding.
Sheldon talks about going to the LEGO store to buy a toy Indiana Jones.
Penny inhales some of the air from the balloon and says, in a deep voice, "Leonard, I am your father!"
Penny says that she has a Cookie Monster tattoo.
Leonard sings part of "You're a Mean One, Mr. Grinch."
Amy dresses up as Dr. McCoy and plays "doctor" with Sheldon.
Raj says that the Russian space shuttle "was designed by the same brilliant minds who were unable to catch Rocky and Bullwinkle."