They don't drink, don't get caught up in immoral situations (read: impervious to blackmail) and they all have foreign experience and language skills. They're like a farm system. Also, incredibly great around the office. Like fill up the coffee pot and pitch in for office happy hour stuff. I'm a big fan.
Yeah, they're really pretty great except when I'm staying with them and have to drive to 7-11 to get a coffee or when I'm with them at a Nats game and it's 95 degrees and I just want a beer or when they start dropping slightly racist bombs.
Another brother in law speaks Mandarin and works in supply chain management...for a company that only works with domestic suppliers.