During the first Iron Man movie, when Tony Stark (Robert Downey, Jr.) is playing craps at the casino, the music in the background is a big band version of the original Iron Man cartoon theme from the ‘60s television show The Marvel Super Heroes. Later on, the theme is used again as Stark’s cellphone ringtone. Give yourself a pat on the back if you caught this one during your first viewing of Iron Man without having to resort to Wikipedia; it was a tough one.