Lol! I can't believe I've only just discovered this thread!
My mum is most certainly one of the apostrophe anoraks... she even has a copy of Eats, Shoots and Leaves. And it's rubbed off on me I think
Mind you, I have only just started to get rid of the habit of saying 'like' all the time - my dad used to count them too, but then I would do it deliberately to wind him up

He also ALWAYS corrects me when I say 'and me' instead of 'and I' but I think there is a cultural thing there - you would sound silly saying 'and I' in normal conversation, or at least I would with my friends.
I used to have a German teacher who couldn't stand Americanisms or bad grammar and would always correct us. She used to get teased about it by the class but in a friendly way, we always respected her and got on with her really well. One time while she was telling someone off she used the word 'audacity' and had to explain what it meant - then after that, he would try to get 'audacity' or 'audacious' into every sentence he said to her! She thought it was so funny...

(I'm not even going to try to look for grammatical errors in this post. Sorry in advance

)