Such a neat concept since 1976 with the world's first intercompany crossover comic, not counting 1975's MGM's Marvelous Wizard of Oz (which was the first comic published by two companies) known as Superman vs. Amazing Spider-Man. I still remembered when i was 10 in one of my city's mall book stores looking at the graphic novels to see what to buy as my first purchase as i spotted something called "Marvel/DC Crossover classics" as it said it had 4 amazing classic crossover comics from Superman vs. Spider-Man to X-Men/New Teen Titans as i was like "No way, far out man" as i bought it and loved it. It was like nothing i've ever seen before of seeing childhood comic heroes like Superman, Batman, Spider-Man, Hulk and X-Men all in one collection together. I even collected the other crossovers when i was a teen especially Marvel vs. DC. What are your fave crossovers? Mine are: JLA/Avengers. Superman vs. Amazing Spider-Man. Superman/Spider-Man. Batman/Captain America. Batman/Spider-Man. X-Men/New Teen Titans. Superman vs. Hulk. some parts of Marvel vs. DC. Darkseid vs. Galactus. Green Lantern and Silver Surfer.