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Ruining his one and only chance at meeting Stan Lee, Sheldon winds up in traffic court because of illegal driving that he did when he drove Penny to the hospital (episode 308). However, as Leonard, Howard and Raj are all going to see Stan Lee, Penny is Sheldon's only hope of avoiding jail.
Sheldon: Good morning, Your Honor. Dr. Sheldon Cooper appearing in pro se--that is to say representing myself.
Judge: I know what it means. I went to law school.
Sheldon: Yet you wound up in traffic court.
Title: "The Excelsior Acquisition"
"Excelsior" is one of Stan Lee's most famous catch phrases, and in this episode, the title refers to Sheldon meeting Stan Lee himself.
The name of the judge was "J. Kirby", a reference to Jack Kirby, a famous comic book artist and long time collaborator of Stan Lee