Rigby gets jealous of his brother, Don, when he visits the park to stop an audit and is forced to deal with him until he leaves.

When Mordecai turns down Rigby's invite to see a horror movie premiere to go to a chick-flick with Margaret, Rigby gets revenge on him by taking advantage of his shyness to ask Margaret on a date before he can.

Benson buys a surveillance system to track Mordecai and Rigby's every move when their constant slacking pushes him to the breaking point.

Mordecai and Rigby look for help when their awesome house party turns lame.

When Muscleman gets dumped by his girlfriend Starla, he becomes too depressed to do anything, and his work is given to Mordecai and Rigby. They try to get the two back together when the work becomes too much.

Rigby hires a temp to do his work but gets jealous when the temp becomes tight with Mordecai.

Mordecai and Rigby plan to host a scary-movie night at the abandoned cemetery in the park so they can raise enough funds to earn a paid-day off.

Skips accidentally kills Rigby while arm wrestling and fights Death to get him back.

Mordecai begins to make fun of Rigby for not having a high school diploma so Rigby decides to drink a chemical that is supposed to make him smarter.

Mordecai and Rigby make a bet with Muscleman and High-Five Ghost to see who can get the most views on their internet videos in one week.

While playing a video game, Mordecai and Rigby make a bet in which the loser of the game has to wear the hairstyle of their game character. Rigby cheats to win the bet and Mordecai is forced to wear a blonde hairstyle.

When the park's bowling team, "The Park Strikers" make it to the championship match in a bowling tournament, Death, the lead member of the rival championship team threatens to reveal Skips' secret if he does not back out.

Mordecai and Rigby try to get Benson to admit they are cool when he bans them from using the cart.

The guys try to get a girl's phone number in order to win a bet with Margaret and Eileen.

When Mordecai and Rigby accidentally knock Benson unconscious, they try to make it seem like it was a dream by dropping him off at his apartment, but end up taking him to his neighbors party to help him impress her.

Benson takes the gang to a Chinese Restaurant on a count of his streak of good luck. But when Rigby switches his fortune with Benson's, he gives his bad luck to Benson.

Mordecai and Skips decide to work together to win the grand prize in a video game tournament. When Rigby finds out Mordecai chose Skips instead of him, his feelings are hurt.

Mordecai and Rigby have to tell Muscle Man that the million dollar scratcher ticket they gave him for his birthday is a fake without getting killed for it.

Rigby changes his name and has to change it back when he realizes that he picked the stupidest name ever... "Trash Boat."

Mordecai and Rigby bust up the cart and have to go on a road trip with Benson to the dealership before the warranty expires.

Muscle Man vows to never prank again when one of his pranks injures Pops. A rivalry park takes this opportunity to attack the park with pranks of all kinds. The only way the park can be saved is if Muscle Man decides to prank again.

After Pops consumes a double glazed apple crisp, the gang must figure out a way to make Pops crash.

Mordecai and Rigby want to stop Muscle Man from screwing with Thomas.

While on their drive to a Halloween party, Mordecai and Rigby tells scary stories to Benson, Pops, Skips, Muscle Man, High Five Ghost and Thomas.

The house is decorated, the guests have arrived and it seems like it's the season to save Christmas when the gang finds themselves faced with the task of destroying a present for Santa that has the potential to destroy them and the holiday.

Mordecai and Rigby want to reunite the band Adrenaline.

Rigby stains Mr. Maellard's expensive white limousine with a meatball sub, so the guys have to clean it before Mr. Maellard gets back from vacation.

Muscle Man wants a local radio station to play the song he wrote for Starla.

Thomas must save his brain after he chugs a slushy that freezes his brain.

Mordecai plans to kiss Margaret at a meteor shower.

Mordecai tries to shake hands with Margaret's father.

Mordecai wants to ask Margaret to be his girlfriend.

The group makes a bet over who can tell the scariest story at their Halloween party.

Muscle Man wants to win a bodybuilding competition at his gym.

Mordecai and Rigby accidentally ruin Thanksgiving and have to fix it before their families arrive for dinner.

The group wants to win a dodgeball tournament, but Mordecai becomes distracted when he discovers that C.J. is on one of the opposing teams.

Mordecai, Rigby, Muscle Man, and Hi-Five Ghost have to venture into the bottom of the crash pit to find their video camera before their boss Benson notices it's gone.

Mordecai, Rigby, and C.J. help Eileen make a music video for her college filmmaking class.

Rigby is humiliated on the game show Expert or Liar and sets off to redeem himself by locating the show's host and making another appearance.

Skips tries to find his soul mate on a dating show after seeing how happy everyone else is in a relationship.

After breaking off his friendship with Hi-Five Ghost over an embarrassing video, Muscle Man tells Mordecai and Rigby the story of how he and Hi-Five Ghost met back in high school when he was the big man on campus — until new kid Hi-Five Ghost comes in and usurps his title.

C.J. competes in a mini-golf tournament to win a card that permits people to cut in line at their favorite restaurant, but things hit a snag when C.J. has to compete against her overly-competitive father.

The park guys plan revenge on Muscle Man for giving them prank gifts every year during their White Elephant Gift Exchange.

Margaret returns to town for Eileen's Christmas party, which complicates things for Mordecai now that he is with C.J. -- and things get worse when Mordecai breaks C.J.'s heart.

Mordecai, Rigby, C.J., and Eileen head to the beach to watch the sea turtles hatch and head into the ocean, but they stumble upon a beachside resort where the wealthy are using turtles in their spas as a fountain of youth.

An alien pod crashes onto Earth and an alien horse known as Party Horse turns to Mordecai and Rigby to help him pass a U.S. History test.

After Mordecai and Rigby crash their cart into the garage door, they have to replace it with help from Pops and the Eggscellent knight, or their boss Benson will have them fired.

Benson is going to fire Mordecai if Rigby can't bring him back from a bizarre land of dudes also known as Dumptown USA.

Rigby is on a quest for the best birthday gift for Mordecai instead of usual lame ones.

Benson gets a pet pig, and asks Rigby and Mordecai to look after it for him.

Rigby tries to get Eileen to go snow tubing.

Rigby's high school nemesis returns and threatens to ruin his chances at passing gym class and graduating high school.

Muscle Man is sick of being used for all the strong jobs at the park. So he decides to work at an office to show people he's smart too.

Pops thinks he's mysteriously in medieval times and a wizard named Marvolo.

The head scientist puts Mordecai and Rigby on a 24-hour lock down inside the Dome, but they want to sneak out and see one of their favorite bands.

A group of robots come to help the guys in the dome.

Muscle Man vows to prank someone.

Rigby must pass a safety test.

The guys must escape a bad guy.

The guys celebrate their first Christmas in space by opening presents, eating peppermint bark and telling Christmas stories. Benson wants the stories to be more Christmasy but the guys keep adding scary elements, which infuriate their boss.

After the incident between Pops and Anti-Pops, the gang search out to find the Seer.

Allies from both sides rally together for the epic fight. However, Pops and Anti-Pops are once again at a stalemate. Mordecai and Rigby are forced to jump between the two factions.