Looks like he is rather hard to ignore - lol!
Our cat sits on the newspaper if you try to read it, and will also sit on the keyboard of the laptop while I'm in the lazyboy. Such an attention suck!
I know exactly what you mean. As I'm typing this on my laptop I have a cat curled up in my lap meaning the keyboard is pushed far away so he has enough room to nap. And every time I try to read a book, my cat Sam always tries to sit on it. The things we do for our pets.
My two don't sit on my head, they sit on what I am reading, or try to lie down the computer keyboard. And how do cats know when your about to stand up?? Seems like the minute you decide stand up they jump on your lap, PURR PURR PURR and want to cuddle.