I'm not sure Halo vs Star Wars would work, their [i]physics[/i] would contradict each other, it's the same problem as with the 40K universe and some of the other [i]VS[/i] threads; one of them involves [i]magic[/i], and the other doesn't. But yeah, it's just for fun, so... I'd like to see a fight between Palpatine and Faber, or The Gravemind vs [url=http://starwars.wikia.com/wiki/Waru]Waru[/url]...