Magnificent Bastard: Mike has this opinion about the Combine.
Dave: What do the Combine look like anyway?
Mike: You know, I'm not sure either. That's how good they are. It's not like they showed up themselves to conquer the earth. Oh no, they were kicking it back at their home world, sipping alien martinis, while they sent another alien race, they had already conquered, to come conquer us, for them! Now that's just slick.
Dave: Wow. And now we're working for them.
Mike: Yeah. It's the pyramid scheme from hell.