Sketchbook➝Famous Faces - Part II

Following on from the first installment of Famous Faces, here's a few more attempts at capturing a likeness. Can you recognise any of these famous people? No easy clues this time as I think they gave too much away.

Do you recognise this person?

Next, who is this?

You'll be lucky to get this one...

If you need any more clues I can tell you that none of the above are Sandra Bullock; it turns out she's my nemesis, as the following descent into madness shows: