One of the early benefits of running is that I've stopped drinking. That was my plan anyway, but I've planned to stop a few times and then slipped back off the wagon again.
Seeing as it's kind of hard to run when you're pissed, I have found it easier not to drink.
I plan to stop until Christmas, which, if I continue running, shouldn't be a problem.
I would be interested in know what other benefits or changes have come your way since running, apart from weight loss and fitness.