Ok, so I am BEYOND happy that Pearl Jam did this when they were in Chicago/Wrigley Field. 1) Because I found out that the song that they swapped out for this was "Evil Little Goat," a song that I can't stand. 2) BECAUSE IT'S DAVID BOWIE AND I SHOULD NOT HAVE TO EXPLAIN ANY FURTHER.
Also, apparently Pearl Jam was using the Chicago Cubs World Series trophy as a stage prop. Ya gotta have Pearl Jam-clout to be able to pull that off.