Billie Joe Armstrong - "I Think We're Alone Now!"

Another social distanced Tonight Show from home.. Jimmy Fallon welcomes Billie Joe Armstrong with a version of Tommy James (okay.. AND Tiffany's) 'I Think We're Alone Now!' And, on his own #NoFunMondays series, he teams up with Susanna Hoffs for a cover of 'Manic Monday!'

Photo: Getty Images