No matter what, there is always a Stan Lee cameo in the main Marvel movies. Already a tradition, the creator of Spider-Man was also present in The Amazing Spider-Man, in a brief scene where a librarian working at the school of Peter.
The scene consists in this gentleman using noise-canceling headphones, and while listening to classical music he is not aware of the big fight between Spider-Man and the Lizard. He is almost hit by a table, but nothing happens 
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