Our latest trip down the internet's (You) Tubes leaves us basking in the mash-up glory of JudgeSpear. This videomaker's page showcases dozens of game crossovers, with characters from different titles fighting, and even non-gaming characters get inserted into the action. While a little long, we especially like one of the shoot-'em-up crossovers, where a spaceship is piloted through several fighting games and even a GameBoy version of Super Mario Bros.
If you're still not convinced, let this sway you: Mike Tyson makes an appearance near the end. Watch the video after the break.