Are you stuck in a Halloween costume rut? Do you have a fierce love for all things pop culture, and want people to know that you appreciate more than just one fandom? Consider making a crossover costume for Halloween this year. Basically, all you need to do is make a list of your favorite Disney characters, Star Wars characters, and video game characters, pick two, and mash up their costumes! If all else fails, just pick one character and make it steampunk, that totally works too. Or make it a zombie, even though some might say that's played out.What's the most popular mashup costume? Here's a hint: it's Star Wars. Star Wars Anna and Elsa, Storm Trooper Captain America, Darth Ursula...you get the idea. Check out this list of awesome costume mashups like these, and also costumes that went a little more unique. Ronald McDonald Joker, anyone? If you want to be the most special and unique person at the Halloween parties this year, take a clue from these awesome costumers and make yours a wonderful mish mash of your favorite characters. Vote up the coolest costume crossovers below, and be sure to let us know what you think in the comment section.