@tsarstepan,
I have fond memories of Keillor from when I was a kid, which has two parts -- it was a) before he was a big deal and b) while I could still hear. I've always considered him so local (I went to school with his son) and always have a moment of "wait, other places know about him too" when he comes up in this sort of thing.
As a kid, I loved listening to him. Very cozy/ homey associations. Kind of an irony-free zone, not sure what I'd think of him now, but I guess no matter what it'd be colored by early memories so would probably be positive. I haven't liked his writing as much as his radio stuff.
I haven't ever heard David Sedaris but I love love love his writing.
Redmond O'Hanlon and Douglas Adams are another couple of storytellers I'd add to the mix. (When I mention Douglas Adams I mean more his anecdotal writing like "Last Chance to See" than his fiction books.)
Also Calvin Trillin.