Sheldon misses out on meeting Stan Lee at a comic book signing because he must appear in traffic court. The nameplate on his bench shows the judge's name is Judge J. Kirby. Jack Kirby was a comic book artist who often worked alongside Stan Lee and helped create some of Marvel Comics' most popular titles.
The traffic summons that Sheldon receives shows that he was photographed on November 16th driving Penny to the hospital. The episode in which this happens, The Adhesive Duck Deficiency (2009), was indeed first aired on November 16th, 2009.
Penny says, "Oh, balls!" when she has to accompany Sheldon to court. In the gag reels for the show, the cast regularly say that catchphrase when they mess up their lines.
Sheldon tells Penny, "The moving finger writes, and having writ, moves on". This is a quotation from verse 51 of the Rubáiyát of Omar Khayyám, a collection of poems originally written around the 11th century AD, as translated from Persian into English by Edward FitzGerald (first published in 1859).
The constitutional issue Sheldon raises in court has been used to successfully overturn red light camera laws in many states.