I found an answer to a problem, and I thought it would be good to post. I was having a problem where when I hit ctrl-alt-0, Instead of going to the view of the camera, it would go inside a mesh itself. I did not have any hidden cameras either.
The answer to this problem is simple. Blender has a feature where you can select an object, hit ctrl-0, and that object becomes the "camera." Thus, the camera view was inside my object. This is pretty neat! I'm not sure how to use it in a beneficial way, but it must be good for something. If you want to set the camera view back to your original camera, select your camera and hit ctrl-0.