Fascinating fact:

Sean Penn made a surprise cameo during a musical performance on Jimmy Kimmel Live! on Tuesday night (28Nov17). The actor played a bartender while U2's Bono and Coldplay's Chris Martin performed a duet of 1943 song One for My Baby, with the special episode of the late-night talk show dedicated to the (RED) charity, which seeks to raise funds and awareness in the fight against HIV/AIDS.