Regular Show - Season 4 (2012)

Mordecai and Rigby take over the duty of judging the Park's Pie Contest, but realize that the job isn't all that easy when they find out that they have to pick a winner.

Benson tries to assemble a 150-piece drum kit to prove that he performed a famous drum solo for a well-known rock band.

When Muscle Man notices a bald spot on his head, he tries to cover it to keep Starla from seeing it at their date.

Pops tries to complete the Milk Challenge to prove that he is worthy of becoming one of the guys.

Rigby must perform a single pull-up to avoid being fired on the grounds of poor personal fitness.

Mordecai and Rigby have to destroy a gift for Santa, to save Christmas.

Margaret is transferring to another college, so Mordecai, Rigby and Eileen plan a going-away party at the park's abandoned ballroom, still haunted by its past hosts.

Muscle Man, Mordecai, Rigby, and High five ghost blow up the fourth of July fireworks and are forced to drive to get new ones.

To prove their love for each other, Muscleman and Starla plan to stay away from each other for one weekend.

Mordecai and Rigby buy a potentially deadly sandwich at a restaurant, but when Benson falls ill after he eats it himself, they must set out to find the cure before he dies.

Mordecai and Rigby want to reunite a famous band when they think the lead singer, who was presumably dead, is alive and living in the park.

Muscle Man bets Mordecai that if he doesn't kiss Margaret by Friday at midnight, he will have to wear a diaper for a week.

Skips has to tell is cousin, Quips, to stop telling bad jokes when he comes to visit.

While camping out in a cave, Mordecai and Rigby accidentally melt a caveman frozen in a block of ice. When they try to keep him, Benson requires that they make him more civilized.

Mordecai and Rigby help their favorite '80s sitcom star, RGB2, escape from the studio lot and into the mountains to get out of a contract that has trapped him into staying on the show.

When the park becomes invaded by vicious territorial geese, Mordecai and Rigby seek the help of the baby ducks to get rid of them.

Mordecai and Rigby try to get on a Japanese Game Show so they can win the grand mystery prize.

Mordecai and Rigby accidentally coat the interior of Mr. Maellard's limousine in meatball sub.

When Mordecai volunteers to drive Margaret to the airport, he tries to convince Benson to let him use his car.

Muscleman, Mordecai and Rigby help "Donny G", a famous D.J. take back over the corrupt local radio station so Muscleman can play his song he wrote for Starla on the radio.

Mordecai and Rigby enter a vehicular doughnut contest to win guest spots on their favorite police procedural TV show.

Skips faces dire consequences when he passes up a day off to reduce his deadly amount of stress.

When Thomas is incapacitated by a dangerously cold slushie flavor, Mordecai and Rigby must enter his brain to prevent the drink from killing him.

A health inspector threatens to shut down the park if sanitary conditions inside Muscle Man's trailer are not improved.

Mordecai plans to kiss Margaret at meteor shower to prove to Rigby that he isn't in the "friend zone".

When Mordecai is invited to a BBQ with Margaret's family, he tries to get her father to give him a handshake.

Mordecai and Rigby try to find a laserdisc player so they can see the director's cut of a famous cult classic.

Mordecai and Rigby try to take back the cart when it is stolen by a rich, snobby country club.

Benson has to trust Mordecai and Rigby.

The gang wants to give a Benson a "World's Best Boss" mug.

Muscleman gets the guys to take him to fast food joints so he can binge on his favorite foods one last time before going on a couple-diet with Starla.

The gang has to stop Muscleman from fighting in his sleep by finding the source of his nightmares.

The gang tries to save Benson from an evil party company, who kidnaps and clones to sell their party-animal counterparts.

Mordecai plans to take Margaret out to a fancy restaurant so he can ask her to officially be his girlfriend.