Penny goes missing, Davis dupes Jimmy's longtime nemesis, Cedric the Entertainer, into making an appearance, and actress Rachel Bloom and the Naked Cowboy place bets on whether Penny is dead or alive.

TV's favourite dad Bob Saget only wants to talk about his obsession with a Japanese collectible toy; comic Carrot Top convinces Todd to capitalize on an unfortunate nickname earned after an on-air flub.

Jimmy's girlfriend, Christie Brinkley, urges him to quit the show; saving her voice for a speaking engagement, TV personality Bethenny Frankel makes Penny do her dirty work; actor David Hasselhoff tells embarrassing stories about his nephew, Marcus.

Everyone is excited to see actor Jason Biggs again, but it turns out he's become a completely different person since the last time he was on the show; actress Beth Stern brings kittens that are available for adoption, then one goes missing.

Chef Mario Batali tries to aid Staci as she struggles through a horrible bout of irritable bowel syndrome; journalist George Stephanopoulos schools Penny on ISIS, an organization she believes is trying to recruit her.

The crew adjusts to its new studio next to Dr. Oz's, the network sends a new staff member, Davis Maxfield, to do the exact same job as Staci. Also, Davis tells Staci to bump actress Julianna Margulies in favour of a YouTube "unboxing" star.

Actor Jesse Tyler Ferguson arrives with his guru and inducts the staff into what seems like a cult; TV show host Michael Strahan disappoints Davis when he avoids talking about football. Staci and Penny fight over TV personality Ross Mathews.

Actress Julianne Moore shadows Staci to prepare for a role in an independent film; Staci goes on an awkward lunch date with Donny Deutsch; Todd consults Barbara Corcoran and Dr. Oz about donating his body fat to Jimmy for a cosmetic procedure.

Staci pitches a movie to director J.J. Abrams, Penny begs Staci to save the show, and Staci offers up TV show host Rachael Ray as an appealing new love interest for Christie Brinkley. Meanwhile, actor Mark Hamill shows up to discuss Staci's new film.

Celebrity publicist Malik needs to find a surrogate for her clients Kelly Ripa and Mark Consuelos; Sarah Jessica Parker revisits an old connection with Staci; Bravo's Andy Cohen stops by to promote his unusual new musical game show.

Actress Debra Messing gets too close for Staci's comfort, arranging a "spa day" for the two of them in her dressing room; Davis has his hands full with actor Brendan Fraser, who wants to debut a an offensive song on "Nightcap."

Staci tries to convince transgender celebrity GiGi Gorgeous to go on a date with Jimmy; Ana pitches her makeup line and wants Stephanie March to be her new spokesperson; Janeane Garofalo is dismayed by Jimmy's sexist sketch.

Todd tries to persuade Debra Messing to make a video in character as Grace; Tim Gunn pops by the studio claiming Jimmy asked him to make an appearance; Randy and Marcus are excited to pitch their new invention to "Shark Tank's" Mark Cuban.

Staci seriously considers leaving "Nightcap;" actress Mariska Hargitay agrees to be eaten by an anaconda on air; Todd directs his first shoot starring actress Rosie Perez, until film director Joel Schumacher intervenes.

Staci tries to convince a reluctant Michael J. Fox to allow himself to be shot out of a cannon on the show; Jim Gaffigan does everything in his power to hawk his new energy drink, EnerrJesus, on "Nightcap."

A lice outbreak forces the whole staff to be treated, causing Whoopi Goldberg to draw the wrong conclusion about the staff members' treatment hairstyles; booked guest Denis Leary calls in sick, but Staci isn't having it.

Staci is caught being a horrible person by Juju Chang's hidden camera show; desperate to prove she's a good person, Staci gets herself in too deep when Brooke Shields pressures her and Kelly Rutherford to take part in a dangerous drinking game.

Gwyneth Paltrow turns out to be a serial thief; Paltrow has a confrontation with fellow guest Jim Norton; Jimmy's dog, Monty, moves into the office; interior decorator Nate Berkus comes to design an office suitable for late-night dog royalty.

Alec and Hilaria Baldwin go out of their way to be empathetic when Staci reveals she had a minor cancerous mole removed; Staci confuses their kindness as sexual interest and propositions them for a threesome.

Jimmy starts a GoFundMe campaign to make a biographical film, and Staci's job is to convince actor Paul Rudd to play "Jimmy" in the film; Wendy Williams bonds with an unlikely person over her wig collection.