October 7, 2015 3:06 am Jay Leno Jumps In to Deliver ‘Tonight Show' Monologue Jokes After Jimmy Fallon pulls a hamstring during the “Tonight Show” monologue, Jay Leno tags in and tells a few jokes. 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 1:36 O.J. Simpson's cause of death revealed 2:03 Does Shakira still believe in love following Gerard Piqué split?