Nathan Lane (Broadway play The Front Page, book Naughty Mabel Sees It All); James Marsden (Westworld (2016)); Nikki Glaser performs stand-up. ...

Margot Robbie (Saturday Night Live: Margot Robbie/The Weeknd (2016)); Vice President Joe Biden discusses the presidential campaign and his political career. Also: Metalli ...

Margot Robbie (Saturday Night Live: Margot Robbie/The Weeknd (2016)); Vice President Joe Biden discusses the presidential campaign and his political career. Also: Metalli ...

Democratic presidential nominee Hillary Clinton; Terry Crews (Brooklyn Nine-Nine (2013)). Also: Ariana Grande performs with The Roots and Jason Robert Brown. ...

Democratic presidential nominee Hillary Clinton; Terry Crews (Brooklyn Nine-Nine (2013)). Also: Ariana Grande performs with The Roots and Jason Robert Brown. ...

Renée Zellweger (Bridget Jones's Baby (2016)); Basketball Hall of Famer Shaquille O'Neal (Inside the NBA (1988)). Also: Eric Church performs with Rhiannon Giddens. ...

Renée Zellweger (Bridget Jones's Baby (2016)); Basketball Hall of Famer Shaquille O'Neal (Inside the NBA (1988)). Also: Eric Church performs with Rhiannon Giddens. ...

Director Clint Eastwood (Sully (2016)); Molly Shannon (Other People (2016)). Also: Mike Posner performs. ...

Director Clint Eastwood (Sully (2016)); Molly Shannon (Other People (2016)). Also: Mike Posner performs. ...

Aaron Paul (BoJack Horseman (2014)); Tig Notaro (One Mississippi (2015), book I'm Just a Person). Also: Florida Georgia Line performs; James Valentine sits in with The Ro ...

Aaron Paul (BoJack Horseman (2014)); Tig Notaro (One Mississippi (2015), book I'm Just a Person). Also: Florida Georgia Line performs; James Valentine sits in with The Ro ...

Blake Lively (Café Society (2016)); Rachel Maddow (The Rachel Maddow Show (2008)). Also: Good Charlotte performs; Ray Parker Jr. sits in with The Roots. ...

Blake Lively (Café Society (2016)); Rachel Maddow (The Rachel Maddow Show (2008)). Also: Good Charlotte performs; Ray Parker Jr. sits in with The Roots. ...

Jada Pinkett Smith (Gotham (2014)); Andy Cohen (Watch What Happens: Live (2009)). Also: Gallant (aka Gallant) performs. ...

Jada Pinkett Smith (Gotham (2014)); Andy Cohen (Watch What Happens: Live (2009)). Also: Gallant (aka Gallant) performs. ...

Ricky Gervais (Special Correspondents (2016)); Ariana Grande (album Dangerous Woman) is interviewed and performs. Also: Jimmy and Questlove recall their various encounter ...

Ricky Gervais (Special Correspondents (2016)); Ariana Grande (album Dangerous Woman) is interviewed and performs. Also: Jimmy and Questlove recall their various encounter ...

Robert De Niro discusses the 15th Tribeca Film Festival; Jesse Tyler Ferguson (Broadway play Fully Committed); Nick Guerra performs stand-up. ...

Robert De Niro discusses the 15th Tribeca Film Festival; Jesse Tyler Ferguson (Broadway play Fully Committed); Nick Guerra performs stand-up. ...

Ice Cube (Barbershop: The Next Cut (2016)); Ellie Kemper (Unbreakable Kimmy Schmidt (2015)). Also: Conrad Sewell performs. ...

Ice Cube (Barbershop: The Next Cut (2016)); Ellie Kemper (Unbreakable Kimmy Schmidt (2015)). Also: Conrad Sewell performs. ...

Russell Crowe (The Nice Guys (2016)); Jonathan Groff (Broadway musical Hamilton). Also: The Lumineers perform; the Sugarhill Gang sit in with The Roots. ...

Russell Crowe (The Nice Guys (2016)); Jonathan Groff (Broadway musical Hamilton). Also: The Lumineers perform; the Sugarhill Gang sit in with The Roots. ...

Jesse Eisenberg (Batman v Superman: Dawn of Justice (2016)); Zoë Kravitz (Allegiant (2016)); Coldplay singer Chris Martin (album A Head Full of Dreams). Also: Coldplay ...

Jesse Eisenberg (Batman v Superman: Dawn of Justice (2016)); Zoë Kravitz (Allegiant (2016)); Coldplay singer Chris Martin (album A Head Full of Dreams). Also: Coldplay ...

Los Angeles week continues with Jennifer Lopez (Shades of Blue (2016)) and Jay Leno (Jay Leno's Garage (2015)), who fills in as a last-minute replacement for Snoop Dogg. ...

Los Angeles week continues with Jennifer Lopez (Shades of Blue (2016)) and Jay Leno (Jay Leno's Garage (2015)), who fills in as a last-minute replacement for Snoop Dogg. ...

'Josh Brolin promotes Hail, Caesar. Jimmy shaves Josh's mustache he grew for his next film role._); Kate McKinnon (Saturday Night Live (1975)). Also: Billy Ocean performs ...

'Josh Brolin promotes Hail, Caesar. Jimmy shaves Josh's mustache he grew for his next film role._); Kate McKinnon (Saturday Night Live (1975)). Also: Billy Ocean performs ...

Democratic presidential candidate Hillary Clinton; Lucy Liu (Kung Fu Panda 3 (2016), Elementary (2012)). Also: Flo Rida performs with The Roots. ...

Democratic presidential candidate Hillary Clinton; Lucy Liu (Kung Fu Panda 3 (2016), Elementary (2012)). Also: Flo Rida performs with The Roots. ...

Joseph Gordon-Levitt (The Walk (2015)); Chris Hardwick (@midnight (2013)). Also: Big Grams performs; Micky Dolenz sits in with The Roots. ...