I am a Breton. I knew I had Dragonskin, but I've never used it, thinking it would be similar to the somewhat useless Shield effect from Morrowind and Oblivion (I mean, it could be handy, but once a day, I just forgot to use it).
I am not sure if I am going to use it from now on much more often, but I guess that absorb magicka versus dragons can be quite interesting... Magicka resistance is always what got me more into picking Bretons as my favourite race. Mostly in MW, when I could run using the Boots of Blinding Speed at 50% resistance.

As for the shouts, I find it a lot of fun.