Pros
I've been at Mythic a few years, and this is a totally different studio than it was when I started. The structure of the teams are different, smaller with shorter project cycles. Management also went through a pretty huge restructuring and it has made a world of difference. Pretty much every aspect of the studio is stronger and it feels like we're finally ready to win. The culture is brilliant, I can't think of people I'd rather work with... I can say that last summer I was looking to move on from mythic... things were bad for a number of reasons but I'm so glad I stayed on. I don't blame any of the negative reviews below, they were accurate for the time, but this place has gone through a transformation and there's no other place in the industry I'd rather work. The benefits are sweet too.
Cons
Fairfax, Virginia. That's where the studio is. It's not a bad place... its actually quite nice... not a whole lot going on... Unless you're lucky/senior you probably aren't going to have much say at all in the types of games that are made, but that's the case with any major studio.