I've recently been turned on to the books by a co-worker who's English and a serious fan. I've only gotten through the first 6 books or so (up to Small Gods). :-)

I can't see that his folk music digs are any worse than any other of his digs at the rest of the world. And, I happen to know 3rd hand that he's a Young Tradition fan, so...

I don't know about identifying, but thus far I enjoy Death and Granny Weatherwax (I like her approach to "headology").

There's been one book thus far that I didn't feel compelled to finish: Moving Pictures.

My English friend says getting the humor in the books is highly dependent on the degree of one's anglophilia (for those who aren't natives) -- whether you know anyone who's English, whether you've ever been there, etc. I've only noticed a few jokes I couldn't get; I keep wondering if there's more I'm missing...

~ Becky in Tucson, Arizona