Starting a couple of days ago, when playing Skyrim when I try to walk forward, every now and then my character tries to move toward the left. Is this likely a problem with my controller? (Doesn’t happen with other games though) or is this a bug in the game; or even my PlayStation?
As others said in the comments, it is more than likely your joystick. I actually had a similar problem happen with one of my Xbox 360 controllers. The problem is simply from usage. I am unsure what you could do to stop the problem, other than buy a new controller.
One other thing (if your controller has sentimental value :P) is to take it to a tech repair shop and have it fixed. Game Stop might fix it, but more and likely just replace it and say they fixed it.