Whew! The postman really must hate me today since Myth, Shadows of Brimstone, my FFG DUST order and Imperial Assault all showed up at the same time! Anyway, here's a very quick photo to give people an idea of the scale of the minis. Generally, the bad guys are a little bit taller than the heroes (especially Vader and the Stormtroopers) although I suspect this is intentional on FFG's part:
From left to right: GW 40k Dark Eldar, Imperial Assault (Stormtrooper), Mantic, Imperial Assault (Luke), Infinity Prowler, DUST, Imperial Assault (Trandoshan), Imperial Assault (Hero), Wizards of the Coast droid.