Got a few, some are less exciting...
Wind at Your Back: The relentless arctic wind seems to always be at your back, egging you on. Deep snow and shallow waters will never slow your determined step.
Born Leader: You are the last of the dragonborn, the blood of the emperors courses through your veins. When a dragon strikes, you will seldom stand alone, as the people of Skyrim back you to fend of the terrible foes.
Cry of the North: Your dragon shouts resonate even louder than ever, causing them to slow down time longer, send enemies flying harder, etc.
Demolisher: When using a war hammer, chances are 150% (1H) or 200% (2H) of breaking an enemy's shield.
Blademaster: Your practiced hand has no trouble tracing an icy trail through the air with the tip of a blade. You slice through your opponents defenses in the blink of an eye, thanks to your greatly accelerated attack while using a sword.
Fat of the Land: You see in every creature myriad bits and pieces, all of use to you, never mind their days worth of fresh meat. In every bit of underbrush, in the branches of every tree, you find a vast supply of sustenance. You gather far more resources from the wild than most.
Highwayman: dialogue options to demand tribute from traveling npcs. This can lead to a fight or npc giving you septims, weapons, or more.
Please!