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