Childrens Hospital

After Cat breaks up with Owen (but not because he's Jewish), Lola decides to do the same with Glen by saying she has brain cancer.

Things are tense between Cat and Lola since the breakups. Briggs tries to convince Glen to rejoin the police force.

Chief calls a staff meeting about Lola's brain tumor. Briggs takes Glen in for malpractice.

Chief treats a boy with advanced aging disease. Blake tries to help his patients with the healing power of laughter.

Dr. Nate Schacter arrives at Childrens' Hospital, bringing his own healing power of laughter.

Glen learns about Cat's new boyfriend. Visiting Dr. Max von Sydow tells Chief about a possible cure for her disorders.

Blake challenges Nate to a healing-power-of-laughter-off.

Blake confronts Lola about her fake brain tumor. Glen takes revenge on Cat's new boyfriend.

The staff are in for a surprise when Max performs surgery on Chief and Blake ropes Lola in for his healing-power-of-laughter-off.

As the new season begins, Cat Black is conflicted about her full-term pregnancy, because the father, Nicky (recurring guest star NICK KROLL -- Dinner for Schmucks, Worst Week) is 6 years old and has advanced aging disease. The doctors remember Lola, who still seems to be dead, and Chief has more than professional feelings for the new administrator. Oh, and Glenn cures cancer.

Cat goes into labor, and Lola turns out not to be dead. Later, Blake returns to Childrens Hospital after his spin-off is canceled, and a sexy new doctor arrives and stirs up the "flames" of desire. Recurring guest star NICK KROLL appears as Nicky.

Halloween descends on the hospital, which causes Owen to be particularly horny for the ghost of Lola. Chief's visit to the maternity ward results in more than she bargained for, when a ton of sexy girls in costumes arrive. MARION ROSS (Happy Days) guest stars. The episode also features a little boy dressed as Ernie Hudson's character in Ghostbusters.

A knife stuck in a boy's chest may not be what it seems. Glenn's cancer cure is threatened by a mysterious visitor and a mind-reading girl visits the coma room. Guest stars include JOHN CHO (Harold & Kumar films, Star Trek) as Park, WILL SASSO (upcoming $#*! My Dad Says, MADtv) as Tucker and KURTWOOD SMITH (upcoming Better with You, That '70s Show) as Ben Hayflick.

Blake's estranged clown brother, Sir Tinkle Button, pays a surprise visit to Childrens Hospital. The episode also features Ride World's Daffy Giraffy™ as a suspected breaker of children's arms.

News Readers visits the set of Childrens Hospital as the cast and crew reflect on the show's history, recent cancellation and new questions about the dolphin's place in the ecosystem. Guest star KATE WALSH (Private Practice) appears as herself.

When an elderly and soulful black man, Hubert McGraw (guest star ERNIE HUDSON - Ghostbusters), and a racist white boy (guest star MARK L. YOUNG -- Sex Drive, Big Love) are impaled by the same flagpole, the staff learns a lesson about racial tolerance. In the meantime, Lola learns a different lesson from two Star Trek fans (guest star ADAM SCOTT - Party Down and GUEST STAR CLARK DUKE - Greek). Plus, JEFFREY ROSS, appearing as himself, pays a visit to the hospital and dispenses his signature insults with reckless abandon.

When the power goes out on the hottest day of the year, sexual tensions boil over amongst the staff. Blake is taken advantage of while in the closet, and Nurse Dori (recurring guest star ZANDY HARTIG -- Role Models, Wainy Days) finds a new and provocative way to fry an egg.

A hip, sexy rabbi (guest star and executive producer DAVID WAIN - Wainy Days) arrives and seduces Valerie, which angers Glenn. Sy faces a moral dilemma involving a coffee machine, and Lola is confused by a mysterious organ in a cooler.

"Take Your Daughter to Work" day at the hospital ignites a series of conflicts involving a leering child molester (guest star STEVE AGEE - The Sarah Silverman Show), Chief's sexy daughter, Harmony (guest star LIZZY CAPLAN - Party Down), and an 11-year-old patient whose gender is to be determined.