After all these years, U2 are still a worldwide musical force to be reckoned with.

Their song "Invisible" debuted during The Super Bowl and has been downloaded over 3.5 million times with proceeds going to AIDS Research. Bank Of America wrote the check for the first 3 million and even now, all the money off itunes goes to RED for the fight against AIDS.

What better way for Jimmy Fallon to launch his new TONITE SHOW than to return to NYC with U2 on Top of Rockefeller Center.