Originally Posted by curtw
I hope you've already read Pratchett & Gaiman's Good Omens. And then, of course, Gaiman has angels as characters throughout The Sandman comics, featuring them heavily in the Season of Mists storyline.
As does Neverwhere
by Gaiman, a recent MR bookclub selection winner, though perhaps not featured in the way the OP is looking for, as it is a single Angel who is not featured throughout, though he does play a significant role.