Our 5-month-old kitty, Blake, is super bity (as I am typing right now, she is attacking my hands). It is alright if she just nibbled, but she goes very hard every time. She used to bite our faces or noses in the morning, I am glad she is not doing that anymore.
She also like to sprint out through the front door and just scratches the floor and roll over around. It has been a routine for three of us: open the door, see the kitty sprints out and does her work, ask her to come home, and either one of us will go ahead and bring her in. However, it is still very amusing to see her does that every time ^^