There is a paper referenced in Language Log which charts the use of “all” as a quotative in Californian speech over the last decade. It seems to be falling out of favour, replaced in this usage by “like”, so that the cool kids no longer say “and I’m, all, Dude, where’s my car?” but “and I’m, like, Dude, where’s my car?”
This was fine enough, but what I liked was the diagram showing a search pattern the authors used on Google. All human life is here:
I can recall as if it were yesterday — as opposed to over eighteen years ago — standing in line to register at the University of California, San Diego, behind two young women who could not complete a sentence without using ‘all’ or ‘like’.