Not only does his perfectionism hinder himself sometimes, but it also comes as an inconvenience to his fellow roommates and friends. Even if you only have seen a few episodes of the The Big Bang Theory, you will quickly learn that Sheldon has a number of idiosyncrasies throughout the series. One quirk that has stayed true is Sheldon’s, “spot” on the couch in his apartment. Whether he is eating at his favorite Thai food, or watching his favorite television series Star Trek, he has to sit in his spot. No matter who may be sitting in that spot, Sheldon will shamefully tell them to move. His obsessive and over the top thinking is displayed in the shows very first episode as he goes on to explain to his neighbor Penny why he chooses that particular spot. “In the winter that seat is close enough to the radiator to remain warm, and yet not so close as to cause perspiration. In the summer, it's directly in the path of a cross-breeze created by opening windows there and there. It faces the television at an angle that is neither direct, thus discouraging conversation, nor so far wide as to create a parallax distortion. I could go on, but I think I've made my point." This quote shows just how much Sheldon obsesses over what maybe only he deems is …show more content…
Perhaps his most famous, “quirk” comes when he knocks on someone’s door. Sheldon feels propelled to knock quickly three times in a row, and then says the persons name on the other side of the door who he wants to speak with. He then proceeds to continue to repeat the same process two more times. The act is comical to say the least, but it couldn’t be clearer that his funny act is a direct reflection of someone that has an obsessive compulsion disorder. Someone with OCPD could also be considered as rigid or even inflexible. Sheldon is inflexible in his schedules, his ideas and opinions, and even in his weekly meals. Thai food on Monday, the Cheesecake Factory on Tuesday, Giacomo’s pizza on Thursday, and finishes with Chang’s Chinese restaurant on Friday. He test his roommate Leonard to make sure that his carryout order is to the exact tee as he likes it, and that it is prepared with his favorite topping and sauce, or he refuses to eat