The pop-punk firestarters compare Canadian and UK slang—and school suspension stories—while rocking The Cure and Shania Twain classics.

It's a Y2K bop bonanza for these action stars as Simu draws on his boy-band past for some Backstreet Boys—all leading to a nail-biting finale.

Which ghosts are the best? The cast of this hit comedy have a lively debate—and spotlight the freestyle skills of their own Utkarsh Ambudkar.

It's a dream come true for lifelong superfan Sandra when she meets her idols for the first time—and even performs with them.

The four surviving members of this hilarious fictitious girl group receive amazing real-time news while bopping to Dua Lipa and Lisa Loeb.

The White Lotus stars recall filming their smash show, share some hilarious self-taped auditions, and summon tears for the first Carpool Cry-Off.

Alanis superfan Cara gets to sing along to her hero's greatest hits—and then introduce Alanis to "WAP."

The Community alums celebrate co-star Donald Glover with a Childish Gambino singalong and reunite with Joel McHale for some Eurythmics.

From Stevie Wonder to DMX—and even Nickelback—the rapper/actor and comic riff through their playlist and a round of Black Facts.

In space, no one can hear you scream—but can they hear you sing “Spice Up Your Life“? The cast of the Apple Original is determined to find out.

It's the moment Gleeks everywhere have been waiting for: Lea and Darren reunite to belt out Broadway showstoppers...and also Meat Loaf?

This duo celebrate their longtime band by covering songs from other sibling acts—plus, Michael teases Kevin for his years of fashion fails.

The iconic Chicago band goes on an adventure with megafan Nikki, featuring a cameo by the great Mavis Staples and a Ferris Bueller homage

Slaying their own fierce hits, the superstars compare real names, take over a convenience store, and do the very first Boat-pool Karaoke.

Hillary and Chelsea turn to their gutsy pal Amber for support as they sing along to empowering anthems--with an assist from Vanessa Williams.

The power couple combine their passions as they sing along to Ciara's bangers and hit the football field for a climactic pass.

These lovebirds first met on the set of this very show. They recount the details of their romance while singing Johnny Cash and Wham! favorites.

Brace yourself for outrageous death scenes and twist endings from the cast of the Apple Original comedy, plus singalongs to Lit and Haddaway.

Charli, Dixie, Heidi, and Marc reminisce about past family road trips and surprise a superfan between Whitney and Britney classics.

The Scottish actors and longtime friends try to remember all the movies they've been in while singing along to Bay City Rollers and The Crystals.

Cedric gives Sheryl advice on how to make her next awards speech even more iconic, plus they jam out to Luther Vandross and Donna Summer.

Two carfuls of wrestling dynamos hit the road in Minneapolis, playing Mind Meld and tearing through a songbook from Pat Benatar to DMX.