The effect of their love towards each other is that it starts spreading to the other zombies and even starts to cure them. With the zombie cure, the two main characters can now be together since they don't have that barrier between them anymore. Another strange set of circumstances is in "Zack and Miri Make a Porno" where the two protagonists are building a relationship while trying to make a porno together. Both these films take the typical story arc and then add strange circumstances to add originality. Other romantic comedies flip the standard conventions of the romantic comedy genre. In films like "500 Days of Summer", the two main interests do not end up together, leaving the protagonist somewhat distraught. Other films like "Adam" have the two main interests end up separated but still content and pursuing other goals and love interests. Some romantic comedies use reversal of gender roles to add comedic effect. These films contain characters who possess qualities that diverge from the gender role that society has imposed upon them, as seen in "Forgetting Sarah Marshall" in which the male protagonist is especially in touch with his emotions, and "Made of Honor" in which the female bridesmaids are shown in a negative and somewhat masculine light in order to advance the likability of the male lead. Other remakes of romantic comedies involve similar elements, but explore more adult themes such as marriage, responsibility, or even disability. Two films by Judd Apatow, "This Is 40" and "Knocked Up", deal with these issues. "This Is 40" chronicles the mid-life crisis of a couple entering their 40s, and "Knocked Up" addresses unintended pregnancy and the ensuing assuming of responsibility. "Silver Linings Playbook" deals with mental illness and the courage to start a new relationship. All of these go against the stereotype of what romantic comedy has become as a genre. Yet the genre of romantic comedy is simply a structure, and all of these elements do not negate the fact that these films are still romantic comedies. One of the conventions of romantic comedy films is the entertainment factor in a contrived encounter of two potential romantic partners in unusual or comic circumstances, which film critics such as Roger Ebert or the Associated Press' Christy Lemire have called a "meet-cute" situation. During a "meet-cute", scriptwriters often create a humorous sense of awkwardness between the two potential partners by depicting an initial clash of personalities or beliefs, an embarrassing situation, or by introducing a comical misunderstanding or mistaken identity situation.