I really like my area - There really isn't THAT much flat area, but I'm counting small hills in the "flat" category.
Hills are plentiful - small and large, steep and shallow. I haven't yet done the climb up Hawk Mountain, but I figure I'll give it a go in the next couple of years. I've seen it listed as a Cat 3 - I know from driving up it in my car that it would be quite the test on a bike (for me) - about 2 miles at about 9% avg.