Donald Trump May 19, 2015 3:40 am WATCH: Jimmy Fallon Thanks David Letterman Jimmy Fallon takes some time to pay tribute to “Late Show” host David Letterman and wish him well on his retirement. US & World Videos 1:37 Pro-Palestinian protesters gather outside White House correspondents' dinner 2:05 How ‘Love Is Blind' made Vanessa Lachey and Nick Lachey's marriage stronger 5:49 Kelly Clarkson hilariously attempts handmade pasta with chef Evan Funke 1:59 Ellen DeGeneres jokes about being ‘kicked out of show business' 2:03 Does Shakira still believe in love following Gerard Piqué split?