Netizens have been creating various parodies for IU's amazing 3-octave performances of 'Good Day' on KBS 'Music Bank' and MBC 'Show! Music Core' this weekend. The video combines various climatic scenes from movies and cartoon shows such as the 'Terminator', 'Tenacious D in The Pick of Destiny', and 'Dragon Ball Z', synchronized with IU's singing as the background music. Amusingly, this series has been named the 'X3 Booster Collection' to match IU's three octave hit. Check out the parodies below! <Original IU video> -- (Our favorite!)