Sheldon: I don't understand why you people are picking on my friend, Howard, when there are much more serious security threats to pursue. For instance, when I first met Leonard, he was on the verge of giving away rocket secrets to a North Korean spy, and not one agent ever investigated that.
Agent Page: This is Leonard Hofstadter?
Sheldon: No, it's a different Leonard. He's Chinese, red hair, six fingers. Good-bye.