If I knew what cat just jumped on my head- all claws out, from the top of the entertainment center I would take it in and declaw it, or euthanize it...I have about twenty holes in my head now, bleeding. I was too busy holding my head in pain to see which of the jerks it was...
Ouch! Do take care of those wounds. Have someone help because I bet you can't see the top of your head.
One of my cats did something weird like that once. My husband was standing at the sink washing dishes and the cat jumped onto his back and just hung there by his claws. My only explanation is that the Cat Mothership called with a report to "Attack! Attack!" only they meant "attack the fleas" and our cats didn't hear that part.