I'm really fascinated by the interview process. Hiring the right person is possibly the single largest impacting factor on company culture. Almost by definition, good companies are made up of excellent employees.
A good company--especially in video games--will always be doing things to disrupt the market and innovate. Market disruption and innovation doesn't come cheap: it requires passionate, creative, and very collaborative team members. Employees that have these characteristics are constantly hungry to achieve and use their talents and energy towards creating incredible products. Good employees like this should be hard to keep a hold of. If you're not competing for their employment with another company, you're probably competing with the employee themself from going off to do their own thing.
Sub-par employees are the opposite: they're rarely thought of when looking for a high-performance role outside the company, and they are frequently satisfied with their environment. The end result for the company is that excellent employees will eventually leave for different, better paying, or more interesting jobs, while the company is left with the mediocre employees that aren't driven enough to do anything but stay in your company forever.
To me, it seems that with every mediocre hire there's a permanent spot in your company that is occupied by someone who could have been an excellent employee. And with every excellent hire it's only a matter of time before they move on to something else. The only employees driven enough to leave are your excellent ones, and with every hire you run the risk of hiring a mediocre employee who will stay forever. It seems all companies run into the problem of 'mediocre decay'.
That being said, keeping your high-performing employees isn't an impossible task, but that discussion is for another post.
The thing that fascinates me the most about the interview process is how much thought we put into it while knowing that it's nothing like a job at all. An interview tests a candidate's prepared responses and, at best, tests their ability to think quickly and improvise thoughtful answers they hadn't pre-meditated. Yet it's still remarkably easy for poor candidates to appear the best fit in this environment. Candidates who are stubborn, rude, have low work ethic, or sub-performing can be considered top candidates after an interview process. It's not until a few weeks into the job that it becomes clear that this person was either a fantastic hire or a complete lemon.
As a result, I always find myself reading any article touting information of good questions to ask potential hires. I can't get enough of it. As I find more articles, I'll add them to this post to start accruing a collection.