The two "dunnos" are because there were few good straight-on photos with mouths closed. The first "dunno" is Gillian Anderson (I SO want to do a "Truth is Out There" render with her, David, and a grey alien! LOL). The second "dunno" is Bette Davis.

Good that they are all recognizeable, though!  I'm going to dig around for some photos of others mentioned here when I have the chance. I'm on a mission!