From the Set: Demi Lovato, Nick Offerman & Megan Mullally and More!

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From the Set: Demi Lovato, Nick Offerman…
Demi Lovato puckers up for a selfie with Seth. Watch her explain why mermaids are real.
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From the Set: Demi Lovato, Nick Offerman…
Larry King makes his point.
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From the Set: Demi Lovato, Nick Offerman…
Megan Mullally only has eyes for Seth. (Sorry, Nick Offerman.) Watch the couple give relationship advice.
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From the Set: Demi Lovato, Nick Offerman…
Gilbert Gottfried basks in the audience's applause.
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From the Set: Demi Lovato, Nick Offerman…
Seth gets prepped before making his studio 8G entrance.
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From the Set: Demi Lovato, Nick Offerman…
"Eeexcellent," is how he looks to be feeling afterward.
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From the Set: Demi Lovato, Nick Offerman…
Kip Moore strikes a picture-perfect pose with Seth. Watch Moore's performance of "Dirt Road."
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From the Set: Demi Lovato, Nick Offerman…
8G band member Syd Butler enjoys a quiet moment (and a cold drink) backstage.
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From the Set: Demi Lovato, Nick Offerman…
Anna Chlumsky is not one to let Seth off easy. See her talk about motherhood.
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From the Set: Demi Lovato, Nick Offerman…
Late Night writer Peter Grosz gets into character for The Greatest Sketch Ever.
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From the Set: Demi Lovato, Nick Offerman…
Dennis Miller and Seth go head-to-head post-interview. Watch Miller talk politics.
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From the Set: Demi Lovato, Nick Offerman…
Megan Mullally makes sure she's on firm footing. Watch her and Nick Offerman's interview.
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From the Set: Demi Lovato, Nick Offerman…
Gilbert Gottfried has no answers to Seth's questions.
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From the Set: Demi Lovato, Nick Offerman…
Anna Chlumsky stays seated as the men of Late Night (and Seth himself) tend to her. Watch her interview.
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From the Set: Demi Lovato, Nick Offerman…
Seth waits for his curtain call.
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From the Set: Demi Lovato, Nick Offerman…
From one Weekend Update anchor to another: Dennis Miller and Seth share a warm embrace.
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From the Set: Demi Lovato, Nick Offerman…
Studio 8G prepares for a musical performance.
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From the Set: Demi Lovato, Nick Offerman…
People in glass houses … look like Conner O'Malley.
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From the Set: Demi Lovato, Nick Offerman…
Astronaut Lutz, played by writer John Lutz, awaits his arrival.
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From the Set: Demi Lovato, Nick Offerman…
The Greatest Sketch Ever readies for Seth's approval – Conner O'Malley, not so much.
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From the Set: Demi Lovato, Nick Offerman…
No one is happier about The Greatest Sketch Ever than Seth.
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From the Set: Demi Lovato, Nick Offerman…
Late Night writher Michelle Wolf gets caught on camera during a Grown-Up Annie rehearsal.
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From the Set: Demi Lovato, Nick Offerman…
Dance break! The 8G band cuts loose backstage.
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From the Set: Demi Lovato, Nick Offerman…
Jonah Hill catches up with Seth in the green room. Watch them reminisce about SNL.
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From the Set: Demi Lovato, Nick Offerman…
A flurry of people await Seth's exit from the green room.