Very often a comedy will succeed because it starts with an inherently funny situation. Take for instance two very close friends being thrown together as roommates and discovering they can't live with one another because one is obsessively neat and the other is habitually messy. This is the situation in Neil Simon's, The Odd Couple, one of his most successful stage comedies. Simon's characters, Felix and Oscar, repeated their roles in both a movie and a long-running television sitcom and then spawned a female version of the play where all the genders of the characters were reversed.