I, too, am a lover of the Powder Milk Biscuit and Ketchup Advisory Board "ads." I usually catch the replay on Sundays.
I'm not a big fan of his singing, but I love the story telling. I think my all-time favorite was his remarks on deer hunting, and how it really was a really humane thing, since the deer is felled so suddenly, with its mind full of thoughts of potential sex with lady deer, and the smell of deer urine, and all that! I worked briefly in a tiny town in North Central WI, and edited books for a company owned by a 65+-yr-old Norwegian bachelor. The town has a holiday lutefisk dinner...and most of the non-townies who worked there often quipped from A Prairie Home Companion.
And, as nice as it all sounds in the stories, I only lasted 6 mos in that particular small-town culture!