Zombie Dinner Party is a movie Rigby wants to go see with Mordecai, but Mordecai turns it down to watch Pajama Sisters 2 with Margaret. So Rigby invites Margaret instead. It appears in "It's Time" and is one of the few sightings of blood on Regular Show, the others being "Jinx" and "Grave Sights".
- It's possible this movie is now available at Movie Shack Hut.
- The arms coming out of the wall is possibly a reference to George A. Romero's Dawn of the Dead.