danskos or clarks.
I've found some cute shoes at Bakers. Smaller mall shoe store.
Beth
Merrell has some cute black "snappy casual" shoes.
My standby are my Frye Harness boots (I have them in black, dark brown, distressed lighter brown, and tan!!). I can dress them up and wear them w/long skirts for work. I also found Clarks, Born, and Reiker to be very comfortable.
I have several pairs of Clark's Artisan line that are heels and actually are more comfortable than most of my flats.