The comic book industry has been home to countless crossover events over the last 50+ years. While Batman and Wolverine have both had major run-ins with the Predator, Marvel's Punisher has teamed up with Archie, and the Avengers have faced off against the Teenage Mutant Ninja Turtles. There's been no shortage of excellent, bizarre, and genuinely confusing comic book crossovers over the last few decades, but only a few have managed to stand the test of time, and they tend to be the crossovers between the two big guns.