I had a manager always checking his emails when we we're in a meeting. It makes the meeting more painful for everyone involved, as the person you're talking too is focusing on something else.

Doodling or scribbling does not bother me, as if someone is doodling, either they don't need to be listening, or it helps them process the info.

As for someone typing the minutes of a meeting, you can easily tell if they are doing their job, or checking in on HN, so that doesn't bother me at all either.