Since Stan Lee gets an Executive Producer credit on pretty much every Marvel film ever (including ones for characters he didn't create, like Captain America) and Marvel films have made A LOT of money (The Avengers alone is the 3rd highest grossing film ever), Stan Lee movies have made over 11 billion dollars. Take THAT, James Cameron.
The comic was 'Captain America Foils the Traitor's Revenge' in Captain America Comics #3 (May 1941). On top of it being Stan's debut, it was ALSO the debut of Cap's signature move - throwing his shield like a frisbee that would bounce back. This was the first time he used the name Stan Lee (his birth name was Stan Lieber).
Stan Lee did a series for DC Comics called 'Just Imagine..' - where Lee wold reimagine some of DC Comics' most famous characters as he would have written them, including:
Co-created with Jack Binder and Alex Schomburg (although it's unclear who actually designed the character), The Destroyer debuted in Mystic Comics #6 (Oct 1941). He was an American journalist reporting from behind enemy lines during World War II who got captured by the Nazis, and was given a prototype super soldier serum by an German scientist who opposed the Nazis. He escaped his confinement and used his abilities to fight Nazis throughout the war.
...and so do all of us, since Earth-1218 is the Marvelverse's name for our actual reality.
Probably not a coincidence he went on to create numerous characters who were constantly dying and being brought back to life.
In the mid-1970's, The United States Department of Health, Education and Welfare asked Stan Lee to write a comic book depicting the dangers of drug abuse while he was editor-in-chief of Marvel Comics. He did a three part Spider-Man story that involved Harry Osborne having a bad LSD trip, but the Comic Code Authority objected to the comics because they had a strict no-drug policy - even if drugs were being shown in a negative light. Stan decided to run the issues without CCA approval and the issues sold just fine. After this, the CCA changed their policy - allowing drug-related topics to be included in comics.
Despite what you may think, The Princess Diaries is not based on a superhero comic created by Stan Lee.