Former Facts Of Life star Lisa Whelchel tweeted some spoilers about U2's visit to The Tonight Show Starring Jimmy Fallon, including photos of the band performing "Beautiful Day," "Angel Of Harlem," and the new single "Song For Someone." While the band is on Friday's show, band segments were pre-taped as The Tonight Show is not taping on Friday. (Photo from Twitter: @LisaWhelchel)

UPDATE: @ShaneAnkeney shared on Twitter that U2 and Jimmy Fallon have dressed as street musicians at a NYC subway station at 10 pm tonight and appeared to be busking. Perhaps it's a revival of the Dalton Brothers? (We can only hope.) @Regineem posted a brief Instagram video of "Angel of Harlem" from the subway stop.