Scar in the middle of my forehead...nope, not lightning bolt shaped, but had the accident happened when Harry Potter was in the theaters, I'm pretty sure the plastic surgeon would have done the stitches that way.
A muscle biopsy scar on my thigh...my mom and younger sister all have these from when we were tested for Malignant Hyperthermia. It stands out enough on my leg that doctors always ask about the scar, and then they really love finding out why we were tested for MH to begin with.