Articles Illumination Intermission: Improv Everywhere Delights Grand Central Commuters To celebrate the 100th birthday of Grand Central Station, the wacky folks at Improv Everywhere staged an surprise light show.Pete(r) Karinen02.08.13 [youtube]http://www.youtube.com/watch?v=tWXh_4GjxK8 To celebrate the 100th birthday of Grand Central Station, the fun folks at Improv Everywhere staged a surprise light show.