With regards to Dragon encounters, I've only had three myself.
I for one am juggling quite a few side quests which is postponing the main quest itself - not that I'm complaining because I'm loving some of the side quests. I've also ventured as far north as Markarth and the ice floes north of Windhelm. So I've still got half of Skyrim to visit when you take that into account!
I've also opted to join the Stormcloaks and have completed a few quests for the mighty Ulrich Stormcloak. What faction have you guys joined?
Out of all the towns/cities you've come across, which is your favourite? Markarth captures my breath for some reason. Maybe it's due to the fact it's situated on a waterfall/mountain and as such, the architecture was designed with this in mind. It's very Dwarven-esque and I just love the feel of the place; it's almost as if I expect to find something thrilling around every corner and staircase.

Oh: I'm a level 16 Breton who utilises all aspects of combat.
Spoiler
Has anyone come across the Daedric house in Margarth? I absolutely loved it and I am just about to find the priest!