The Ryvita ad, "for ladies THAT crunch"...

[squeaver]

I know that "that" and "who" are both relative pronouns, but it just seems wrong to me.

What do you think, wise ones?

Oh and I know the ad is patronising tosh, by the way.

Squeaver this is one of my most hated things. And it seems to be generally accepted as correct! So often I hear people say things like, 'my friends that don't work', or 'people that eat vegetables' and it drives me nuts. It's people WHO and things THAT.
I feel better now.

Hmmm....shouldn't it be people WHO and things WHICH?

That is only really colloquial imo.

.........but that might be complete rubbish....