I guess this could belong to the pub...
I had the strangest dream in which I was climbing David Cameron's face (summer conditions). The slightly overhanging chin was technical but good pro was available at the lips, then I easily managed to follow the corner of the nose (little pro but easy). However the forehead was all about faith in friction, with almost no hand holds. What a relief when I reached the hair! I gave it E2 5b. Quite hard compared to Tony Blair's face (HVS 4c).
Now I keep thinking about who would make a good climbing route. David Attenborough looks like a good low-grade varied route when he is smiling. Rihanna looks like a polished nightmare on the other hand.