They turned out great! I think the best measurement of success at the office is the number of requests for the recipe, and that was pretty high on this one. The recipe is a very easy one, too, so it gets a high recommendation for casual group get-togethers.
I should also mention the source. The Smitten Kitchen Blog consistently has some of the best recipes around (and pretty food pictures too). I would highly recommend adding it to your bookmarks.
These brownies are really rich. I cut the pieces about 2 1/2" square, and several people said they could have been smaller. They are so rich that serving them with a little Häagen-Dazs Vanilla Ice Cream actually cuts the richness.