childlike. >> smell that? that's the smell of new co comic books. >> oh, yes. >> sheldon played so wonderfully by jim parsons injected this humanity into him. >> you care a lot more about sheldon. he's -- he's not comedic relief. he is sort of the hero in a way. >> sheldon, what are the hell are you doing? >> trying to figure out why electrons behave as if they have no mass when traveling through a graphing sheet. >> with marbles? >> i needed something bigger than peas now, didn't i? >> what makes these characters wonderful is they want to be included. and then, there is the very beautiful penny who lives across the hall from sheldon and leonard. >> oh, welcome to the building. >> oh, thank you. maybe, we can have coffee sometime. >> oh, great. >> great. >> great. >> she's funny. but they show her as having a fraction of their iq. >> howard wallowitz.