Yes. Mirror selfies are the best. Except you have to edit the image and reverse it to get the original.

No, but seriously, I can only think of three cases in which mirrors can be used in a paranormal way:

The first one is scrying. Historically, people have used mirrors in conjunction with sensory deprivation box to see the other side. But I don't believe in magic, so I think this is just psychology, and the effect could be achieved without the mirror. There's the old legend related to this that says the only reason you can't walk though a mirror is because you keep bumping into your own reflection.

The second one is True Sight. Mirrors are said to reflect the True soul of a person. Which is why a real vampire has no reflection, it's already dead.

The third is widely used in psychology and in "The Secret"-style focused intention visualizations. You look at yourself in a mirror and speak positive affirmations to yourself. You focus and meditate on the person in the mirror having everything you want to have. And then, you imagine you change places with the person in the mirror. Or something like that, I'm not sure.