Yes, ladies and gentlemen, the star of Maniac Cop, Jack Of All Trades and Man With The Screaming Brain is in all three of Sam Raimi's box office smash-hit Spider-Man movies. Admittedly he appears for about five minutes worth of screen time in total. But if Bruce himself is to be believed, he still holds a particularly crucial role in each narrative.
But as you'll recall in the first Spider-Man, in my little "cameo role" as the ring announcer, I name Spider-Man! If I wasn't in that movie, that billion-dollar franchise would be called The Human Spider. Part two, sure it's an insignificant role as the Snooty Usher. Cameo, just a cameo. Quick question Did Spider-Man ever get in that theatre? Interesting, so technically, I'm the only character who has ever defeated Spider-Man! Part three Spider-Man comes to me, a French maître d' for advice. How many superheroes come to a lowly maître d' for advice? Not many buddy.
So there you have it. Even in his blink-and-you'll-miss it cameos, Campbell was pulling the strings the whole time. And to think - at one point, fans were convinced that he was set to play super-villain Mysterio in a future film. Don't be ridiculous - his role was far more significant than that of any mere super-villain.